Function main

example/cpp14/executors/actor.cpp:257–285

};

int main()
{
  const std::size_t num_threads = 16;
  const int num_hops = 50000000;
  const std::size_t num_actors = 503;
  const int token_value = (num_hops + num_actors - 1) / num_actors;
  const std::size_t actors_per_thread = num_actors / num_threads;

  struct single_thread_pool : thread_pool { single_thread_pool() : thread_pool(1) {} };
  single_thread_pool pools[num_threads];
  std::vector<std::shared_ptr<member>> members(num_actors);
  receiver<int> rcvr;

  // Create the member actors.
  for (std::size_t i = 0; i < num_actors; ++i)
    members[i] = std::make_shared<member>(pools[(i / actors_per_thread) % num_threads].get_executor());

  // Initialise the actors by passing each one the address of the next actor in the ring.
  for (std::size_t i = num_actors, next_i = 0; i > 0; next_i = --i)
    send(members[next_i]->address(), rcvr.address(), members[i - 1]->address());

  // Send exactly one token to each actor, all with the same initial value, rounding up if required.
  for (std::size_t i = 0; i < num_actors; ++i)
    send(token_value, rcvr.address(), members[i]->address());

  // Wait for all signal messages, indicating the tokens have all reached zero.
  for (std::size_t i = 0; i < num_actors; ++i)
    rcvr.wait();
}