HEAP sharing between EXE & DLL

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3 total messages Started by Eyyub Volkan �ektimur Mon, 19 Nov 2007 13:36

#1074

Author: Eyyub Volkan �ektimur
Date: Mon, 19 Nov 2007 13:36

16 lines
1577 bytes

Hi,

if i understood correctly, when your EXE & DLL heaps differs from each 
other, then you should not create memory at EXE and delete at DLL (or vice 
versa...). so, when you set them to use/share same HEAP, there will be no 
problems i guess... To do this with borland, set application/DLL to use 
dynamic version of RTL. Is it correct that when we use dynamic version of 
RTL , there will be no HEAP problem in the future, means you can mix memory 
management with DLL & EXE.

Is there any way to understand that DLL & EXE are using the same HEAP or 
different HEAPs ?

thanks for help
_______________________
Eyyub Volkan �ektimur

Re: HEAP sharing between EXE & DLL

#1075

Author: Bob Gonder
Date: Mon, 19 Nov 2007 16:08

12 lines
1403 bytes

Eyyub Volkan �ektimur wrote:

>Is it correct that when we use dynamic version of 
>RTL , there will be no HEAP problem in the future, means you can mix memory 
>management with DLL & EXE.

No.
For instance, if the exe is compiled with VS, they won't be using the same memory manager.
Also if the exe is a different version of Borland/CodeGear than the dll, they might use
different managers as well.

You need to be very carefull, forever, whenever you circumvent the rules.

Re: HEAP sharing between EXE & DLL

#1078

Author: Eyyub Volkan �ektimur
Date: Tue, 20 Nov 2007 06:36

25 lines
1943 bytes

oh yes, i thought that but didn't write it. it's also required to use same 
version of RTL/CRT on EXE/DLL's. thank you for warning. I need to understand 
that are EXE & DLL's using the same memory manager/HEAP ? to avoid some 
problems, and make more reliable debugging...

"Bob Gonder" <notbg@notmindspring.invalid> wrote in message 
news:ipc3k3hbvq8pfjivle4l1cn5etuong459b@4ax.com...
> Eyyub Volkan �ektimur wrote:
>
>>Is it correct that when we use dynamic version of
>>RTL , there will be no HEAP problem in the future, means you can mix 
>>memory
>>management with DLL & EXE.
>
> No.
> For instance, if the exe is compiled with VS, they won't be using the same 
> memory manager.
> Also if the exe is a different version of Borland/CodeGear than the dll, 
> they might use
> different managers as well.
>
> You need to be very carefull, forever, whenever you circumvent the rules.
>
>

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