Re: overriding global operator new/delete
Alexander wrote:
Hi!
I have implemented a memory manager and I would like to override the global
operators new and delete.
My application is a bunch of dll's where some are loaded at run-time and
some are linked to during compile time.
My memory manager organized in a dll. Naturally, compilation process
generates memsub.dll and memsub.lib which I link to the application before
msvcrt by placing the memsub.lib before any of standard libraries in the
linker command line. However, there is no call to memsub's new/delete
operators.
Then I tried to export the operators new/delete from memsub.dll
by using __declspec(dllexport) and I received following compiler errors:
[snip]
I work with VC 6.
Could you please explain to me this a behavior or maybe you could
tell me what I'm doing wrong for global operator new/delete replacement.
Each module gets its own operator new and delete. operator new has a
fixed signature (it is declared in <new>), so you can't change that
signature by declaring it __declspec(dllim/export).
So I think you'll have to override new and delete separately for each
module (exe and dll) in your application that you want to use the memory
manager. Have the DLL export some other functions (e.g. myspecialalloc
and myspecialfree), that the various operators new and delete can then
directly call.
Tom