[dmd-concurrency] draft 5

[Andrei Alexandrescu]

Kevin Bealer wrote:
> So the caller calls setMaxMailboxSize with a callee's Tid.  Then that 
> caller will not send messages unless the callee's mailbox is smaller 
> than that amount?
> 
> Will all callers obey the limit, or should they each set their own 
> limit?  If the latter, then the design is as I thought.

Each thread has a mailbox. That mailbox has a capacity. That capacity 
can be set from any thread. It's that simple.

Andrei