C ++ 11线程限制？

Question

edit 3: WORKS on win 7, BSOD on win 8.1. Thank's why I hate updates.

edit 2: I got a BSOD saying: "Attempted to write in read only memory: vtss.sys"

edit : There is a variable WORD KEYS[1024]; being read but only read , never written by all threads. I am using visual studio 2012 on windows 8.1. Why does it crash?

Is there a limitation in the number of C++11 threads? I am trying to make 1k threads but sometimes the program crash at no 47... Why 47?

#include <iostream>
#include <thread>

using namespace std;

WORD KEYS[1024];

void thread_job(int no)
{
    cout << KEYS[0] << KEYS[no] << endl;
}

int main()
{
    int items = 1000;

    std::thread *tt = new std::thread[items];

    for(int i = 0; i < items; i++)
    {
        tt[i] = thread(thread_job, i+1);
        cout << i << endl;
    }

    for(int i = 0; i < items; i++)
        tt[i].join();

    return 0;
}

Answer 1

Without knowing anything about your code, which OS you're targeting or which compiler you're using, I am willing to say that you can have more than 47 threads . What you are seeing is a bug in your code, not the compiler, OS or language conspiring against you.

However, there is virtually no sane reason to do what you are doing. You don't want 1000 threads, but you can create them just fine.

If you want help in determining why your code crashes, post a full code sample that reproduces the problem.

Answer 2

If you want to use multiple threads it is better to go for a thread pool.

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