How do I use thread pools in Boost.Asio?

How do I use thread pools in Boost.Asio?

You can use boost::asio::thread_pool to manage a pool of threads for executing asynchronous tasks. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

#include <boost/asio.hpp>
#include <iostream>

void print(int id) {
    std::cout << "Task " << id << " is running on thread " << std::this_thread::get_id() << '\n';
}

int main() {
    boost::asio::thread_pool pool(4); // Create a thread pool with 4 threads

    for (int i = 0; i < 10; ++i) {
        boost::asio::post(pool, [i]() { print(i); });
    }

    pool.join(); // Wait for all tasks to finish
    return 0;
}

This will create a thread pool and execute 10 tasks using 4 threads.

What if I want to adjust the number of threads dynamically?

You can manage the thread pool size by creating a custom thread pool class that allows you to add or remove threads as needed. Would you like more details on that?