Using one (dedicated) vector per thread (OpenMP)

[brenda81]

Hello everyone

I recently picked up multithreading with OpenMP, so it is still new to me. While processing data, I would like to store it in a vector, as shown here:

vector<int> vect;
#pragma omp parallel for
for(int c=0; c<500; ++c)
{
    vect.push_back(c)
    
}

However, since it is multithreaded, I would like (and need!) to have one dedicated vector per thread. I haven't been able to find an example of how to do this online. Is it even possible? I'd be happy to get some hints...

Cheers,
B.

[Bourgond Aries]

http://en.cppreference.com/w/c/thread/thread_local

Maybe that's what you're looking for?

From using the SFML library, I remember the "sf::ThreadLocalPtr<>" template. For every thread, there is a single instance.

Personally I'd just have every thread create its own vector on the stack and let it work with that.