WebReturns the value contained in obj. This operation is atomic and uses sequential consistency (memory_order_seq_cst).To access the value with a different memory ordering, see atomic_load_explicit. See atomic::load and atomic::operator T for equivalent member functions of atomic. Parameters obj Pointer to an atomic object. Type A represents … WebAtomic flags是 lock-free(原子操作), 是唯一被保证的lock-free 原子操作的. Constructor. atomic_flag() noexcept = default; atomic_flag (const atomic_flag& T) = delete; // …
std::atomic_flag::atomic_flag - cppreference.com
WebApr 6, 2024 · 天真的布尔否定std::atomic_bool b;b = !b;似乎不是原子.我怀疑这是因为operator!触发了plain bool的铸件.一个人将如何进行等效的否定?以下代码说明了幼稚的否定不是原子:#include thread#include vector#include atomic#include io WebFollowing is the declaration for std::atomic_flag_test_and_set. bool atomic_flag_test_and_set( std::atomic_flag* p ); C++11 bool … firwood gardens portland or
atomic_load - cplusplus.com - The C++ Resources Network
WebOct 29, 2013 · ATOMIC_FLAG_INIT is implementation specific and solve as a macro to {0}. It means that Microsoft uses aggregate rules to do the job. Quote from cppreference … WebISO C++ 標准沒有說明商店在多長時間內可見或有什么影響,只有兩個應該建議:第6.9.2.3 節向前進展. 18.實現應確保由原子操作或同步操作分配的最后一個值(按修改順序)將在有限的時間段內對所有其他線程可見。. 和33.5.4 順序和一致性 [atomics.order]僅涵蓋原子,不包 … WebDec 21, 2024 · std::atomic_flag. std::atomic_flag in C++11 has a simple interface. Its member function clear lets you set its value to false, with test_and_set to true. In case you use test_and_set you get the old value … camping near greer az