相同类型的STL容器类线程安全吗？ [英] Are STL Container Classes Of Same Type Thread Safe?

问题描述

我有一个向量A的线程1，我也有一个向量B在线程2上。

I have a Vector A on Thread 1, I also have a Vector B on Thread 2.

是可以安全地写向向量A和B时间，因为它们是不同的实例化对象，但是类型相同？

Is it safe to write to vectors A and B at the same time, given they are different instantiated objects but of the same type?

如果没有，为什么不同于在线程1上的int c和int d on Thread 2？

If not, why is this different from the writing to an int c on Thread 1 and an int d on Thread 2?

推荐答案

没有标准容器类是线程安全的。如果两个不同的线程访问修改共享资源的相同成员函数，那么你的代码是不安全的。

None of standard container classes are thread-safe. If two different threads access the same member function which modifies the shared resource(s), then your code is not safe.

代码， vectorA 和 vectorB 不是共享的资源，那么你的代码是安全的，假设向量不不包含共享资源本身。

But in your code, vectorA and vectorB are not shared resources, then your code is safe, assuming that the vectors do not contain shared resources themselves.

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