rdominy@kong.gsfc.nasa.gov (Robert Dominy) (03/27/91)
I'm having trouble with using callback/completion routines for MacTCP under MacApp. It seems that under the MacApp memory management, it is possible that the segment in which my callback routines are defined can be periodically unloaded. This of course kills the program if any such routine is invoked. What is the proper way of telling MacApp that a Code seqment should be resident in memory and should not be unloaded? I tried defining my own 'seg!' resource as described in the reference manual, but this did not seem to help. I was able to define the callback routines as being in one of MacApp's resident segments (GDebug) which seemed to work. Thanks.... ------------------------------- Robert Dominy NASA Goddard Space Flight Center
peirce@outpost.UUCP (Michael Peirce) (03/28/91)
In article <4637@dftsrv.gsfc.nasa.gov>, rdominy@kong.gsfc.nasa.gov (Robert Dominy) writes: > > I'm having trouble with using callback/completion routines for > MacTCP under MacApp. It seems that under the MacApp memory > management, it is possible that the segment in which my callback > routines are defined can be periodically unloaded. This of course > kills the program if any such routine is invoked. > > What is the proper way of telling MacApp that a Code seqment should > be resident in memory and should not be unloaded? I tried defining > my own 'seg!' resource as described in the reference manual, but this > did not seem to help. I was able to define the callback routines as > being in one of MacApp's resident segments (GDebug) which seemed > to work. I think you want to define a 'res!' resource, rather than (or in addition to?) a 'seg!' resource for resident segements. You could also just use one of the predefined resident segments like MARes ({$S MARes}), though your choice of GDebug might cause problems if you build a non-debug version. -- michael -- Michael Peirce -- outpost!peirce@claris.com -- Peirce Software -- Suite 301, 719 Hibiscus Place -- Macintosh Programming -- San Jose, California 95117 -- & Consulting -- (408) 244-6554, AppleLink: PEIRCE
ph@ssd.kodak.com (Pete Hoch) (03/28/91)
<4637@dftsrv.gsfc.nasa.gov> rdominy@kong.gsfc.nasa.gov (Robert Dominy) writes: >What is the proper way of telling MacApp that a Code seqment should >be resident in memory and should not be unloaded? I tried defining In C++ put a "#pragma segment ares" line before the routine you want to stay resident. I forget the format for Pascal but it exsists. Pete -- Pete Hoch | ..somewhere..!kodak!ssd!bashow!ph ..or.. Color Systems ISPD. 3/65/RL | ph@ekcolorlink.ssd.kodak.com ..or.. Eastman Kodak Co. | ph@bashow.ssd.kodak.com Rochester, NY 14650-1805 | 716-722-3285