Create Threads in a loop

Question

I just tested something like this:

boost::thread workerThread1(boost::bind(&Class::Function, this, ...);
boost::thread workerThread2(boost::bind(&Cla         


        

Answer 1

You can keep them in an array:

size_t const thread_count = 5;
boost::thread threads[thread_count];
for (size_t i = 0; i < thread_count; ++i) {
    threads[i] = boost::bind(&Class::Function, this, ...));
}

In C++11, you can keep std::thread in friendlier containers such as std::vector:

std::vector threads;
for (int i = 0; i < 5; ++i) {
    threads.push_back(std::thread(boost::bind(&Class::Function, this, ...))));
}

This won't work with boost::thread in C++03, since boost::thread isn't copyable; the assignment from a temporary in my example works because of some Boost magic that sort-of emulates move semantics. I also couldn't get it to work with boost::thread in C++11, but that might be because I don't have the latest version of Boost. So in C++03, your stuck with either an array, or a container of (preferably smart) pointers.