在多个线程上发布任务时 boost::asio::thread_pool 线程安全吗？

Question

I'm submitting more than one tasks to boost::asio::thread_pool concurrently. But official document does not talk about thread safe of boost::asio::thread_pool.

the boost lib version is 1.69. And my code like below:

/*define a thread pool*/    
boost::asio::thread_pool pool(4);

//on thread 1
boost::asio::post(pool, my_task_1);
...
//on thread 2
boost::asio::post(pool, my_task_2);

so I want to know is the code able to work on multiple threads

Answer 1

boost::asio::post uses executor to post tasks into thread pool. Executor requirements are described under this link . One of sentences is

The executor copy constructor, comparison operators, and other member functions defined in these requirements shall not introduce data races as a result of concurrent calls to those functions from different threads.

so your code is safe, you can call post from multiple threads.