Re: I want to make singleton class

From:
"AliR \(VC++ MVP\)" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 27 Aug 2008 15:43:45 -0500
Message-ID:
<80jtk.11112$L_.6760@flpi150.ffdc.sbc.com>
I couldn't recreate your problem.

What I did was create a singleton like so in the an MFC dll

class CSingleton
{
private:
    CSingleton();
    static CSingleton *m_pSingleton;
public:
    static CSingleton *GetSingleton()
    {
        if (m_pSingleton == NULL)
        {
            m_pSingleton = new CSingleton();
        }
    }
};

I make calls to CSingleton::GetSingleton() from both the Exe and the dll and
got exactly the same pointer.
I tried making the first call in the exe and then the second call in the
dll, and it worked fine.
I also tried to make the first call to GetSingleton from the DLL and then
the exe and it also worked fine.

AliR.

"Isaac" <usback@comcast.net> wrote in message
news:%23XzoQJHCJHA.2060@TK2MSFTNGP05.phx.gbl...

I make the simple singleton class with a boost shared_ptr that is the
static pointer.
normal programing didn't problem. but if i use with a extension dll file.
for example the singleton class was made in the dll file, and that created
one of instance in the exe file.
it seemd that instance pointer didn't problem in the call from exe, but if
i called singleton class to want to get same pointer in the dll.
the singleton class was made new one instead of first pointer. so how can
I do?????

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