Re: Passing Pointers -- where to delete them

James Kanze <>
Mon, 3 Mar 2008 02:39:02 -0800 (PST)
On Mar 3, 7:24 am, Ian Collins <> wrote: wrote:

On Mar 3, 12:37 am, Arv <> wrote:

I got most things clarified now, but I still have a doubt
related to shared_ptr. When I use a singleton object, would
a shared_ptr help?

Not really, because:

Because when I use new inside the singleton's getInstance
method, I am not sure when to delete it, since it is a
static member, i am not sure putting the delete in the
destructor would help. Should I have another method called
resetInstance or something?

Well, if it's a singleton, why would you want to reset it? ;-)

Unit tests - you would want the object reset before each test.

In such cases, I'll use a separate process for each test. It's
a lot closer to the actual use case. But even then, unit tests
for singletons are somewhat difficult. Typically, the singleton
will look like a memory leak, which, of course, causes the test
to fail---you need to take special precautions to avoid this.

James Kanze (GABI Software)
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