> A DLL used by multiple OS/2 processes, will only be loaded once. Right?
> An EXE running in multiple OS/2 processes, like a mailer/BBS in a multi-line
> situation, will be loaded again for each process. Right?
 
Having multiple processes running the same copy of an EXE is called
"multi-threading".  It's very popular.  What you do, is you fork
off another thread with the DosCreateThread call or some such, and then the
two .EXE's share the same data segment (all your global variables, in C,)
and the same code segment (the program), but they have their stack segments
(local variables).  It shouldn't be too hard for an OS/2 bbs to fork a
seperate thread for each line in a multi-line system, meaning you don't
have to have seperate copies of the .exe loaded for each.
 
I may try that when I port XBLAT to OS/2.  Right now I'm writing it under
DOS, and waiting for the new OS/2 to get out of beta so I can buy a copy
that'll work on my 4 meg ram machine...  (Call me sheepish, but I'm not
mucking about with a beta as my OS.  I don't care HOW stable it is, I only
have the one computer.  (I've seen too many horror stories.  Admittedly,
they were linux horror stories, but still...)  I'm following the discussion
intently, though...
 
Rob landley
 
--- Xblat V1.00