Coroutine library scheduler

[Teto <mattator@...>]

Hi,

I am looking for a coroutine library that is able to :
-handle dependancies between coroutines. For instance, a coroutine can
be a child of another one, if I remove its daddy, it should die. The
child coroutine could also block the daddy coroutine.
-reuse these coroutines (I read it could improve performance)

I've started created something like that (for a game) but I would
prefer using a robust,well-tested implementation. Is there any or is
it too specific ?

Regards
Matt