A thread pool for executing arbitrary tasks

Http://www.think-async.com/Asio/Recipes? Skin = clean. Nat % 2 Casio % 2 cpattern # a_thread_pool_for_executing_arbi

CreateIo_service:

 
ASIO: io_service;
 

And some work to stop itsRun ()Function from exiting if it has nothing else to do:

 
ASIO: io_service: Work (io_service );
 

Start some worker threads:

 
Boost: thread_group threads;
For (STD: size_t I = 0; I <my_thread_count; ++ I)
Threads. create_thread (boost: BIND (& ASIO: io_service: Run, & io_service ));
 

Post the tasks toIo_serviceSo they can be saved med by the worker threads:

Io_service.post (boost: BIND (an_expensive_calculation, 42 ));
Io_service.post (boost: BIND (a_long_running_task, 123 ));
 

Finally, before the program exits shut downIo_serviceAnd wait for all threads to exit:

 
Io_service.stop ();
Threads. join_all ();