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| subject: | OS/2 EXEs with shared code? |
Arjen Lentz wrote in a message to All:
AL> Hi All,
Hi Arjen!
AL> A DLL used by multiple OS/2 processes, will only be loaded
AL> once. Right?
Mhmm, CODE or DATA?
AL> An EXE running in multiple OS/2 processes, like
AL> a mailer/BBS in a multi-line situation, will be loaded again
AL> for each process. Right?
CODE or DATA?
AL> If the above two observations are correct, it'd be rather
AL> unfortunate, wouldn't you agree?
AL> For instance UNIX only
[...]
I analyzed a few DLLs and EXEs with EXEHDR:
DLL
DATA: SHARED or NONSHARED
CODE: never declared SHARED!
EXE
DATA: NONSHARED
CODE: NONSHARED
Personally I think, all CODE segments are shared by definition (CODE is not
writable and may be shared therefore).
Remember Wind*ws? This system was swapping code segments out of the exe
files! Surely OS/2 1.x used the same scheme and why shouldn't it share
them?
Too bad, EXEHDR is not telling "EXECUTABLE, ..., SHARED".
Somebody owning a REDBOOK?
Tschuesz,
Vitus
--- timEd/2 1.00
* Origin: Seems to be a Point of BetaBox Walheim (2:2474/100.20)SEEN-BY: 12/2442 54/54 620/243 624/50 632/348 640/820 690/660 711/409 413 430 SEEN-BY: 711/807 808 809 934 942 712/353 623 713/888 800/1 @PATH: 2474/100 0 2476/2 2480/76 24/24 396/1 3615/50 229/2 @PATH: 12/2442 711/409 54/54 711/808 809 934 |
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