Re^3: How to wait for events, and not lose any, while processing them ?


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Re^3: How to wait for events, and not lose any, while processing them ?

by Eyck (Priest)

on Jan 27, 2009 at 08:27 UTC ( [id://739127]=note: print w/replies, xml )

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in reply to Re^2: How to wait for events, and not lose any, while processing them ?
in thread How to wait for events, and not lose any, while processing them ?

That is not exactly the problem here, imagine if you will, that your interrupt-handling routine calls interrupts herself.

Now you have the same problem as I have - the 'disable interrupts' portion is similiar to the first version of the code - I stop listening for 'interrupts' while processing. The problem is that in this case, if interrupts come, then I ignore them.

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Re^4: How to wait for events, and not lose any, while processing them ?
by talexb (Chancellor) on Jan 27, 2009 at 14:51 UTC

OK -- so your first approach is to make the interrupt service routine as lightweight as possible. If that means you're still dropping interrupts, you need to move to C or assembler to get a lighter weight ISR.

If that still isn't working, you'll need to move more of your application away from Perl and down to C or assembler until the desired performance is realized.

Alex / talexb / Toronto

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