implication of nesting coroutines

[Michael Fung]

Hi Marc,


I want to use MongoDB::Async, which claims: "This driver uses Coro and 
EV. It switches to another Coro thread while waiting response from server."

If I use it like that:
[code]
# coro thread to read database per user request
async {
   while (1) {
   ...
   my $wait_user_request = AnyEvent->io(
     ...
     cb => rouse_cb
   );

   $res = rouse_wait;
   # Use MongoDB::Async here to read database ...
   ...
   }
}
[/code]


So, this means nesting coroutines, right? If yes, is it bad practice?


Rgds,
Michael