[Tinyos-devel] AMSend.cancel command clarification request

[Philip Levis]

On Mar 15, 2007, at 10:21 AM, Andreas Koepke wrote:

> [...]
>> Hm. I'm wondering if signaling sendDone from the cancel() command is
>> problematic. It breaks one of the programming hints. The other option
>> is to keep a bitmask of which packets are cancelled, post a task, and
>> cycle through the mask.
>
> ok - done using the bit mask and the deferred signal via a task. I  
> know
> that at leats I have a problem with the race conditions introduced  
> when
> sendDone is signalled from inside a command. So I better not  
> confuse all
> other guys...

Yeah, if the implementer ran into trouble with it, chances are it  
isn't the most robust solution. :)

Core is going to talk about radio stacks next week or the week after  
(i.e., TEP 105). I'll try to remember to bring up the cancel()  
semantics.

Phil