WebDiscusión Variantes Vistas Ver Editar Historial Acciones std atomic flag test cppreference.com cpp atomic atomic flag Apoyo compiladores Implementaciones … Webstd::atomic_flag 是原子布尔类型。 不同于所有 std::atomic 的特化,它保证是免锁的。 不同于 std:: atomic < bool > , std::atomic_flag 不提供加载或存储操作。. 成员函数
c++ - 如果使用 `memory_order_relaxed` 檢查它,為什么要使用 …
WebDec 21, 2024 · Additionally to C++11, default-construction of a std::atomic_flag sets it in its false state and you can ask for the value of the std::atomic flag via atomicFlag.test(). WebMar 12, 2024 · std::memory_order order ) noexcept; bool atomic_flag_test_and_set_explicit( std::atomic_flag* p, std::memory_order order ) … reach regulations 2021
::test_and_set - cplusplus.com
WebJun 22, 2016 · std::atomic_flag. std::atomic_flag has a simple interface. Its method clear enables you the set its value to false, with test_and_set back to true. In case you use test_and_set, you get the old value back.To use std::atomic_flag it must be initialized to false with the constant ATOMIC_FLAG_INIT. That is not so thrilling. But … WebArgs>. 本文介绍了 C++ 中结束线程的方法,包括使用 join () 函数等待线程结束、使用 detach () 函数分离线程、使用 std::atomic_flag 、std::condition_variable、std::promise 以及 … WebDec 16, 2024 · Load the value of the variable “ a ” into the CPU register. Add 1 to the value in the register. Write the value of the register back into the variable “ a ”. For non-atomic int a, if initially a=0; and 2 threads perform the operation a=a+1; then the result should be a=2; But the following can happen (step by step): reach regulations 2022