Igor --
Thanks for the quick reply.
Igor R
Is there a way to ask the io_service to distribute a particular handler to every thread that is running the service? My use case is per-thread watchdogs, and I need the worker threads to ping the watchdog on some regular interval (e.g., every 5 seconds).
No, io_service threads are expected to be used for scalability purposes only, and the application logic is expected to be "decoupled" from the threading.
Ok, that makes sense. I think I confused myself: thinking that the per-thread "heartbeat" isn't really application logic, so much as low-level plumbing...
What you can do instead is to use multiple io_service's, instead of multiple threads running 1 io_service (see io_service-per-CPU example).
Hm. Let stare at that example for a bit. [Ponders] I think I understand what you're getting at. I want to set up an io_service-per-thread, with each io_service having a deadline_timer to handle the heartbeat. The only other complicated bit is selecting an io_service to handle an incoming request. It's a bit irksome to have to trade off the scalability to get this extra feature. I wonder if I can somehow do a double dispatch of sorts, or maybe do some accounting to see if I can make sure I always select an idle io_service if possible. Thanks again for the reply. Best regards, Anthony Foiani