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Article #1088

Re: malloc versus GlobalAlloc

#1088
From: Eyyub Volkan �ektimur
Date: Tue, 20 Nov 2007 14:56
45 lines
3028 bytes
i was just realized that they are not the same malloc borland used , as you 
said. I'was creating a message to fix myself, and saw yours. thanks alot 
again. (i also tried to create memory with msvcrt.malloc and to free it with 
normal free, it raised an exception , hehe, i'm extremely luck today i gues)

"Alan Bellingham" <alan@lspace.org> wrote in message 
news:j8r5k3tnu3aa63mdjfc3tni7mtqasr4lh1@4ax.com...
> "Eyyub Volkan �ektimur" <evcektimur@prokon.com.tr> wrote:
>
>>one more question;
>>
>>i traversed all modules loaded by EXE (EnumProcessModules) and queried 
>>that
>>which module including "malloc"
>>(GetProcAddress(modules[cx],"malloc")!=NULL). the result is ;
>>
>>malloc in C:\WINDOWS\system32\msvcrt.dll
>
> Ah, yes.
>
> This would appear to be an exported malloc() - i.e. visible when you
> look at the table of symbols exported from an executable.
>
> It's fairly likely (OK, at least 99.9% chance*) that at some point,
> you're linking to a Microsoft DLL (e.g making any use of the operating
> system ...), and at that point, you're going to find something that uses
> MSVCRT.
>
>>does not borland have a seperate memory manager that handles malloc ? if
>>there is, why malloc is in msvcrt.dll ? as i know CC3260* is the
>>VCL-Compliant of CRT, so it's making more sense to include malloc in
>>CC3260*.dll. does borland using microsoft's memory management DLL
>>(msvcrt.dll) ? (if it's, CC3260* should be a mapper to msvcrt.dll) ...
>
> The malloc() that Borland code uses will not be the one you've found.
> The Borland libraries will be using a non-exported version, which won't
> show up in your explorations. Well, not unless you use borlndmm.dll (and
> I've not looked to see what it actually exports).
>
> Alan Bellingham
>
> * Note that this statistic is 100% likely to be made up
> -- 
> Team Browns
> ACCU Conference 2008: 2-5 April 2008 - Oxford, UK 
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From: "Eyyub Volkan �ektimur" <evcektimur@prokon.com.tr>
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Subject: Re: malloc versus GlobalAlloc
Date: Tue, 20 Nov 2007 16:56:12 +0200
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