Re: [asio] using fork in coroutine composed operations

From: Gavin Lambert (boost_at_[hidden])
Date: 2019-09-09 01:39:13

Mere moments ago, quoth I:
> Where your timer is being used as a timeout (so that you run them in 
> parallel) things get more complex, since you have to deal with 
> cancellation of the timer and/or the read (including coping with the 
> case when you requested cancellation but it actually completed 
> successfully before it could actually cancel; and not accidentally 
> interpreting acknowledgment of cancelling your previous timer wait as a 
> cancellation of a subsequent timer wait).  But it should be doable.

Forgot to add: multiple operations concurrently in flight also means 
that you can't used the moved-handler lifetime model any more, and 
you'll probably need to switch to a shared-handler lifetime model instead.

Or create separate sub-handler operation objects for each parallel 
action -- but in practice this will probably end up still requiring the 
original parent object to have a shared lifetime.