[Boost-users] Re: Using shared_ptr across shared library boun dary

From: David Abrahams (dave_at_[hidden])
Date: 2004-03-11 17:57:39

"Jim.Hyslop" <Jim.Hyslop_at_[hidden]> writes:

> David Abrahams wrote:
>> "Edward Diener" <eddielee_at_[hidden]> writes:
>> 
>> > Is there any problem with using shared_ptr and passing an 
>> instance of it to
>> > a function in another shared library, such as a DLL under Windows ? 
>> 
>> Works beautifully, even if the two DLLs are using different heaps.
>
> Are you sure about the different heaps? 

Positively.

> It's been my experience
> (with Visual Studio, at least) that allocating memory in one DLL and
> deallocating it in another leads to problems. Sometimes it doesn't
> go noticed, but when it does, it's really noticeable.

The library cleverly avoids that, provided the first shared_ptr to
take ownership of the memory does so in the same DLL where the object
was allocated.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com