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echo: os2prog
to: Nicky Morrow
from: Peter Fitzsimmons
date: 1996-08-02 05:13:16
subject: LH32

NM> Seriously, Peter, I use and appreciate your LH32 but 
 NM> have a request if you
 NM> are in the programming mood.  The latest version of RAR/2 has 2 features
 NM> than are of great benefit on my overloaded systems...

 NM> 1)  The ability to give back extra sleep cycles (which helps the rest of
 NM>     my system during long periods of compressing, OS/2 appears to use a

Run it (and all your other compressors [hint for max/squish:  use bg.exe in
compress.cfg]) under a program like this:

 // bg.c
 // 16bit MSC 6 prorgram.
 #define INCL_NOPM
 #define INCL_DOS
 #include 
 #include 
 #include 

 void main(int argc, char **argv)
 {
     if(argc==1){
         printf("BG - run program at Background priority\n");
         printf("USAGE: FG \n");
     }
     DosSetPrty(PRTYS_PROCESSTREE, PRTYC_IDLETIME, 31, 0);
     exit(spawnvp(P_WAIT, argv[1], &argv[1]));
 }

This is a lot better than "give back extra sleep cycles",  which
will cause the compressor to work slowly even when your PC isn't busy.  The
idle-time solution I show above,  will let it run full-tilt when nothing
much is going on.



 NM> 2)  Ability to set the run-time priority.

I don't think it is appropriate for command line utils to set their
priority explicitly;  it is much better to let them inherit it from its
parent,  and/or to let the system "priority=dynamic" do its work
(which is disabled if you set your priority).

For example,  a whole session can be placed in to bg mode with "bg
cmd";the last thing I want is programs overriding it after that.



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