Re: [asio-users] thread safety and IO objects

[Christopher K. <ch...@ko...>]

Max M. wrote:
> I'd have a few more questions on this subject.
> 
> After running io_service::stop, can I safely assume none of the
> threads is still executing a handler?

No, stop() doesn't block. You have to use some other mechanism to wait 
for the threads to complete.

> Given my current knowledge of Asio, If I wanted to be able to, say,
> stop a tcp::acceptor without stopping the whole io_service,  I'd
> probably choose to have all handlers started off through a strand and
> provide a special handler to call tcp::acceptor::stop.
> I'd also take a similar approach to handle timeouts on socket operations.
> 
> Is there a way to achieve the same results without resorting to a
> strand, other than locking all accesses to the acceptor or the socket?

How about only having a single thread call io_service::run? :) I can't 
think of anything else off the top of my head.

Cheers,
Chris