atomic_int和int＆＃xff1f之间有什么区别;
当仅在线程之间的关键部分中写入和读取int时，线程是否安全？ 那么Atomic_int和int？之间有什么区别 “ int”不是原子吗？
Isn't it thread safe when only write and read int in critical section between threads?
So What is the difference between atomic_int and int？
Is 'int' not atomically?
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std :: atomic_int由标准保证，完全不参加数据竞赛。您无需通过关键部分保护它。如果您没有
int的数据竞赛（例如在关键部分中，所有锁定都可以访问可变尊重），那么您将不会使用std： ：atomic_int。您只需要
std :: atomic＆lt; t＆gt;，如果您想访问无默默的共享变量或其他同步，则可以在一次独占所有权时给出1个线程。A
std::atomic_intis guaranteed by the standard not to have data races, at all. You don't need to protect it with critical sections.If you wouldn't have a data race with
int(such as in a critical section, with a lock that all accesses to the variable respect), then you redundantly wouldn't withstd::atomic_inteither.You only need
std::atomic<T>if you want to access a shared variable without mutexes or other synchronization to that gives 1 thread at a time exclusive ownership of it.