<div>
Thats what I thought, thanks.
</div>


<div>
<div class="content wysiwyg-content">
I am curious as to how DLLs work in memory most specifically whether the whole DLL is loaded into memory when a single function is called (or class instantiated).<br />
<br />
I am mostly interested in terms of COM objects. <br />
<br />
Basically can someone tell me what the performance/memory differences are in calling a class in a DLL that contains many other classes as opposed to calling a dll that has a single class?<br />
<br />

</div>
</div>


I am curious as to how DLLs work in memory most specifically whether the whole DLL is loaded into memory when a single function is called (or class instantiated).

I am mostly interested in terms of COM objects. 

Basically can someone tell me what the performance/memory differences are in calling a class in a DLL that contains many other classes as opposed to calling a dll that has a single class?



DLLs and Memory

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.