Do mutex locks happen in the same order they are asked?

Question

I am currently trying to create a very simple thread pool using std::thread. In order to maintain threads \'alive\' after their given task is done, I associate

Answer 1

No, you cannot guarantee that your thread loop will ever acquire the lock with your example as is. Use a conditional variable to signal to the thread loop that it should awake and take the lock. See std::condition_variable::wait(...). condition-variable

More on this topic in general can be found here http://en.wikipedia.org/wiki/Condition_variable. If you were using the pthread library, the equivalent call would be pthread_cond_wait in your "Thread loop" and pthread_cond_signal in your runTask function.