未经编辑的C ++线程共享资源

Imagine the following scenario:

想象一下以下场景:

#include <chrono>
#include <iostream>
#include <thread>
#include <vector>

void DoSomething(int* i)
{
    std::cout << *i << std::endl;
    std::this_thread::sleep_for(std::chrono::seconds(1));
    *i = 2;
    std::cout << *i << std::endl;
}

int main()
{
    std::vector<int> v = {0, 0, 0};
    v[0] = 1;
    std::this_thread::sleep_for(std::chrono::seconds(1));
    std::thread t(&DoSomething, &v[0]);
    t.join();
    std::cout << v[0] << std::endl;
}
#