Subject:
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RE: signals / legOS internals
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 23 Jun 1999 21:18:10 GMT
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Viewed:
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1003 times
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> > Why signals?!?
>
> Because they are useful at times, and Markus directed me to implement them. I
> think the upcoming network code is going to use them, too (at least, that's
> what I heard). Just 'cause they're there doesn't mean you have to use them.
>
> > Unix-style asynchronous signals is the last feature I would
> > ever want to implement or use. Brain-dead and very dangerous
> > "feature".
Ummmmm, I don't want to speak for Markus, but most embedded kernels (and
I use a lot of them) use the term signal and semaphore interchangably.
I'm willing to bet a couple of bricks that the intent is to implement
semaphores to facilitate inter-task synchronization....
Markus?
Cheers,
Ralph Hempel - P.Eng
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Check out pbFORTH for LEGO Mindstorms at:
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Message has 1 Reply:
 | | Re: signals / legOS internals
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| I misspoke when I said before that we have semaphores. What I meant was mutexes. We have had mutexes for quite awhile. Certainly long before I started on this signal thing. I started this long enough ago that I don't remember what particular problem (...) (25 years ago, 23-Jun-99, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: signals / legOS internals
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| (...) Because they are useful at times, and Markus directed me to implement them. I think the upcoming network code is going to use them, too (at least, that's what I heard). Just 'cause they're there doesn't mean you have to use them. (...) How do (...) (25 years ago, 23-Jun-99, to lugnet.robotics.rcx.legos)
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