LinkTerminated without linked thread?

[Sean Kelly]

On Jan 24, 2013, at 5:58 AM, "monarch_dodra" <monarchdodra at gmail.com> wrote:

> On Thursday, 24 January 2013 at 13:45:18 UTC, David Nadlinger wrote:
>> On Thursday, 24 January 2013 at 10:57:26 UTC, Stephan wrote:
>>> So my first question is: Where does the LinkTerminated Exception come from, when the only functions from std.concurrency that I use are "spawn" and "receiveOnly".
>> 
>> To track this down, what about looking at the std.concurrency source and placing a breakpoint at the appropriate line in MessageBox.get()?
>> 
>> David
> 
> Yeah, I've been playing with std.concurrency too lately, and getting random bugs. I'll try to formalize them into formal requests.
> 
> BTW: Question: Is "LinkTerminated" a priority message? I've been avoiding using SpawnLinked because I've been unable to effectively end my workers. Maybe I just suck though...

It's a control message. These are messages generated automatically by std.concurrency rather than sent by the user. They live in the normal message queue and so are processed when receive doesn't find a match earlier in the queue. The idea is that if an owner sends a spawned thread a bunch of messages, the spawned thread should have an opportunity to process those messages before receiving an OwnerTerminated message.  Making them priority messages would make designing predictable algorithms difficult.