[dmd-concurrency] Shutdown protocol

[Sean Kelly]

On Jan 21, 2010, at 11:28 AM, Andrei Alexandrescu wrote:

> Steve Schveighoffer wrote:
>> ----- Original Message ----
>>> From: Andrei Alexandrescu <andrei at erdani.com>
>>> Steve Schveighoffer wrote:
>>>>  foreach(tid; tids) {tid.join();}
>>> Oh btw that shouldn't be coded like that, it's slow. Must be something like:
>>> 
>>> joinAll(tids);
>>> 
>>> so joining is initiated in parallel.
>>> 
>> What does joinAll do?  I admit I am not too familiar with your proposed API.
> 
> The idea is to join on all threads in parallel. Otherwise, if you have N threads, the Nth will become aware you plan to shutdown only after all others have already finished.

But joining just waits for the thread, it doesn't tell it anything.  Or am I misunderstanding what join() does in this API?