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Too Many Files Open - Result Code -42 (Can't Load Any More Instruments)

2003-07-09 by Evan Evans

Ran into this problem today when I was loading a massive instrument with many 
keyzones and 32 groups. Got the error:

"Too Many Files Open - Result Code -42"

I searched the web endlessly and found this info on developer.apple.com:

"Why do I get a (-42) too many files open error? 
The number of files allowed to be open by Mac OS X applications defaults to 256.  
You can raise this limit by calling setrlimit( RLIMIT_NOFILE, &rip ). Setrlimit() is a 
mach-o routine, so if your application is CFM, you may have to call through the CFM-
>Mach-O glue.  For more information about setrlimit() type "man setrlimit" into the 
Terminal."

This information, I believe, is for the developer to use (Emagic) to control the 
maximum amount of open files (samples, audio files, etc.). So it's their resposibility to 
program it in. i tried executing the root user commands described above and got no 
where.

I further found this document at developer.apple.com called:
"Open File limits On Mac OS X":
http://developer.apple.com/qa/qa2001/qa1005.html

I hope this helps others understand a little about this problem should it occur to 
them.

Does anyone know how to raise the open file limits manually, perhaps via NetInfo 
Manager?

Thanks,
Evan Evans

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