Subject:
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Re: Very strange problems
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 21 May 2000 19:25:42 GMT
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Viewed:
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1383 times
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On Sun, 21 May 2000, Michael J Ash wrote:
> On Sun, 21 May 2000, Luis Villa wrote:
>
> > > Nope, no multi-threading.
> >
> > Good. It's generally solid, but can cause some issues from time to time.
>
> What sort of "issues" are these? Are you referring to the normal issues of
> multithreading (synchronization, deadlock, etc.), or specific
> legOS-related problems with it? I have a program that uses a decent amount
> of multithreading, and I'd hate to have to fight the OS from yet another
> angle. :)
Just that it is not pre-emptive. If you don't msleep() at the appropriate
places in your code, you'll never go back to the scheduler or the other
threads. This can come as a surprise, since you'll only notice it when
one thread never executes.
Luis
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Someone told me there's a girl out there
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Message has 1 Reply:
 | | Re: Very strange problems
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| (...) Ack! I knew that it was cooperative in the 0.1.x series, but I had thought it was preemptive in 0.2.x. Drat. Well, I don't think it's a major problem for me, since I call msleep() religiously, but it's something to look into. Thanks. -- "Our (...) (25 years ago, 21-May-00, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: Very strange problems
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| (...) What sort of "issues" are these? Are you referring to the normal issues of multithreading (synchronization, deadlock, etc.), or specific legOS-related problems with it? I have a program that uses a decent amount of multithreading, and I'd hate (...) (25 years ago, 21-May-00, to lugnet.robotics.rcx.legos)
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