Re: Single instance issue

From:

Sarath <CSarath@gmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

Fri, 21 Dec 2007 21:59:31 -0800 (PST)

Message-ID:

<b818d69d-2549-4687-9288-37676023c9d9@s19g2000prg.googlegroups.com>

On Dec 21, 6:22 pm, Norbert Unterberg <nunterb...@newsgroups.nospam>
wrote:

Sarath schrieb:

I've to write a single instance class. there are different methods to
control the single instance of a program

class CSingleton
{
public:
    CSingleton& GetInstance(){ static CSingleton s; return s; }

private:
    CSingleton(){}
    ~CSingleton(){}
}

The above code failed to compile in Visual C++ 6.0 but compiled in
Visual C++ 7.1 and Visual C++ Express 2008. CRT calling the destructor
of the class. So that Visual C++ 6.0 compilation error is correct
according to the concept.

I also tried in Dev C++. It was successful but didn't call the dtor of
the class. Which implementation is correct according to the standard.

You might want to have a look at the singleton class in one of the boost m=

odules:

http://svn.boost.org/trac/boost/browser/trunk/boost/pool/detail/singl...

I find the implementation quite interesting.

Norbert- Hide quoted text -

- Show quoted text -

Sorry I can't use Boost. It's there are specific libraries approved
for my project. So it's difficult to add a new library support for
entire project.