boost::thread_group in C++11?

Question

Is there anything like boost::thread_group in C++11?

I'm just trying to port my program from using boost:thread to C++11 threads and wasn't able to find anything equivalent.

Boost threads and C++11 threads are different. I personally keep using boost threads because of the more complete API (and the lack of current implementation of eg. thread local storage). — Alexandre C., Mar 27 '12 at 17:07

score 35 · Accepted Answer · answered Mar 27 '12 at 17:07

35

No, there's nothing directly equivalent to boost::thread_group in C++11. You could use a std::vector<std::thread> if all you want is a container. You can then use either the new for syntax or std::for_each to call join() on each element, or whatever.

answered Mar 27 '12 at 17:07

Anthony Williams

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Since 2012 has there been a better solution to this problem? – pyCthon Aug 31 '13 at 20:58
3

I'd like to add that there is really no magic in `boost::thread_group`, it's a little more than a vector of threads (the "little more" being some utility functions like `join_all` and `create_thread`). – Tamás Szelei Jan 17 '16 at 13:45

rustyx · Answer 2 · 2020-11-17T12:55:08.937

9

thread_group didn't make it into C++11, C++14, C++17 or C++20 standards.

But a workaround is simple:

  std::vector<std::thread> grp;

  // to create threads
  grp.emplace_back(functor); // pass in the argument of std::thread()

  void join_all() {
    for (auto& thread : grp)
        thread.join();
  }

Not even worth wrapping in a class (but is certainly possible).

edited Nov 17 '20 at 12:55

answered Jan 27 '16 at 15:27

rustyx

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Does vector::emplace_back(functor) behave like vector::push_back(std::move(functor)); – Zhang Dec 26 '19 at 01:15

boost::thread_group in C++11?

2 Answers2