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From: chucks@pnet51.orb.mn.org (Erik Funkenbusch)
Newsgroups: alt.sources.amiga,comp.sys.amiga.programmer
Subject: Re: Short Hello World
Message-ID: <4852@orbit.cts.com>
Date: 8 May 91 07:01:42 GMT
Article-I.D.: orbit.4852
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peterk@cbmger.UUCP (Peter Kittel GERMANY) writes:
>In article <1991May4.134045.7550@cs.umu.se> dvljrt@cs.umu.se (Joakim Rosqvist) writes:
>>In article <1200@cbmger.UUCP> peterk@cbmger.UUCP (Peter Kittel GERMANY) writes:
>>>In article <1991May2.102554.8679@cs.umu.se> dvljrt@cs.umu.se (Joakim Rosqvist) writes:
>>>>
>>>>Ok, assembler strikes back with this: (56 codesize, 92 executable)
>>>
>>>Shame on you, you cheated! You do an OpenLib without a CloseLib!
>>>Perhaps this explains the difference.
>>>
>>I did not! It's ok to close a disk-library, but DosLib is in ROM, and
>>Closing it is the same as adding NOP's to the code. Anyway, with a
>>closelib it will be 60/96 bytes. Still shorter!
>>If you don't agree with me, reply in Amiga.programmer...
>
>Well, we had a lengthy discussion on this in the German sub.sys.amiga
>group. We came to the conclusion that it would really be dangerous!
>Because, if your Amiga runs long enough and runs such programs in a
>tight loop, the use counter of the library will be increased every time.
>And, after *some* (:-) time, it will wrap around to zero. And, if it
>happens that you have a tight memory situation just in this moment and
>exec flushes all unused libs: POOF! I admit, not an everyday scenario, 
>but sure possible :-).
>
>You see, there was a related discussion whether you should check for
>success of opening dos.library (or which lib was it?) at all, because
>theoretically you always will succeed. But also there it was concluded
>that you better use the safe way.
>
>-- 
>Best regards, Dr. Peter Kittel  // E-Mail to  \\  Only my personal opinions... 
>Commodore Frankfurt, Germany  \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk


not to mention that there is SOME RAM overhead for opening a library anyways,
if you happen to have all memory allocated and then try to open a library.. it
won't succeed, that is a MUCH more common occurance.  I think commodore should
DEFINATELY squelch this rumor that rom calls will always succeed.

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