calling a method in a DLL (unmanaged) from managed code

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Hi all

I have written a Dll in c++. The Dll has a exposed function in which i allocate run-time memory using new operator. The dll is called from unmanaged multi-thread apps.

I am facing a issue that run-time memory allocation is getting crashed when the client app (C#) call my dll.

Can you help me to which heap-function should i use ?

thanks

Posted 12-Mar-12 7:21am

paul crescent

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Sergey Alexandrovich Kryukov 12-Mar-12 13:29pm

I would need to look at your code. Generally, if you need to do allocation of memory on unmanaged side, you should deallocate it on unmanages side. Perhaps you need to functions instead of one.
--SA

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Dave Kreskowiak · Answer 1 · 2012-03-12T07:38:00

Solution 1

If the caller is responsible for freeing the memory allocated by the .DLL function, the .DLL should also expose a function for the caller to use to free that memory. You should NOT be relying on the caller to know which method of allocation the .DLL used to allocate a block of memory.

Posted 12-Mar-12 7:38am

Dave Kreskowiak

ravijmca · Answer 2 · 2012-03-12T16:52:00

Solution 2

Read this article

http://blogs.msdn.com/b/jonathanswift/archive/2006/10/02/780637.aspx[^]

but only concern is you can not call MFC Extension dll function in your managed code

Posted 12-Mar-12 16:52pm

ravijmca

calling a method in a DLL (unmanaged) from managed code

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calling a method in a DLL (unmanaged) from managed code

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