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oib111
I post too much
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Joined: 02 Apr 2007
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Location: you wanna know why?
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 Posted: Tue Apr 21, 2009 5:08 pm Post subject: Why do we still have DLLs? |
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Microsoft DLLs were created to solve problems existing under batch systems in the 1960s. As operating systems, including Windows, have moved away from fixed memory models to paged virtual memory management systems, the problem DLLs were invented to solve have disappeared.
DLLs create non-obvious links between a program and code fragment "somewhere" in the system: even simple programs may not be totally contained in its .exe file, but be spread out over, and be dependent on, multiple DLLs. The exact location and depth of those dependencies may be difficult or impossible to determine. Since DLLs can call other DLLs, the chain of complexity can extend to any depth.
Second, DLLs are subject to problems caused by missing DLLs and conflicts between DLL versions, the so-called "DLL hell". This is such a significant problem for Windows applications that even Microsoft is known to use the term.[1]
Critics of the dynamic linking model argue that it is the wrong model for paged memory managed systems, and that static linking is better and more secure. DLLs, it is argued, degrade the isolation between processes that modern operating systems provide, consequently violating the security of the entire system.
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Makes me wonder why we still use them?
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Dark Byte
Site Admin
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Location: The netherlands
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| Posted: Tue Apr 21, 2009 5:16 pm Post subject: |
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It makes updating programs easier.
Instead of having to download a 400MB exe, you can download a 500kb dll (e.g windows update often does this)
And it saves diskspace (multiple programs can make use of the same library, e.g directx, opengl, physx, sdl, etc...)
Also, it's not just windows, linux as well. (There the library hell is even worse than on windows, most programs use other libraries which most of the time aren't even installed)
As for the 'security' reason: fuck it
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oib111
I post too much
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Joined: 02 Apr 2007
Posts: 2947
Location: you wanna know why?
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| Posted: Tue Apr 21, 2009 6:13 pm Post subject: |
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Thanks for the explanation. And I didn't really care much about the security reason either.
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| 8D wrote: |
cigs dont make people high, which weed does, which causes them to do bad stuff. like killing |
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Slugsnack
Grandmaster Cheater Supreme
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