Article View: comp.sys.apple2.gno
Article #465Restartability
From: Phillip Vandry
Date: Fri, 08 Jan 1993 17:49
Date: Fri, 08 Jan 1993 17:49
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1745 bytes
This thread was in EMail, but I believe it is more apropriate for it to be in this group. > >instance of the program again (well, I guess you could if you really > >worked hard on your program, but it's not worth it, is it?) > > It is *definitely* worth it. Just think of 10 users using vi. Now would > you want 10 copies of vi in memory or 1 copy of vi with 10 dp/stack > segments for each instance of the program? But I'm not sur eit can be done. It involves keeping no variables in the program itself, and therefore using pretty big chunks of bank 0 memory. But even then there are still GS/OS parameter blocks which pretty much must reside inside the program. There would have to be semaphores around all accesses to GS/OS paramter blocks, and since each instance of the program is seperate, who creates the semaphores and tells everyone else about them?.. > Albert ______________________________________________________________________ |~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~~~~| | Phillip Vandry | Vandry@Cam.Org | II the future! | II 1993! | |________________|________________|________________|___________________| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!usenet.coe.montana.edu!ogicse!psgrain!charnel!sifon!CC.UMontreal.CA!IRO.UMontreal.CA!matrox!altitude!vandry From: vandry@CAM.ORG (Phillip Vandry) Newsgroups: comp.sys.apple2.gno Subject: Restartability Message-ID: <C0JquI.6K7@CAM.ORG> Date: 8 Jan 93 17:49:29 GMT Article-I.D.: CAM.C0JquI.6K7 Organization: Champlain Regional College, St-Lambert QC CANADA Lines: 24