Re: [C++-sig] Call Policy for Singleton

2009-02-13 Thread ZaeX
When the Singleton class is linked, the DLL will get the Singleton::_instance as an unique static variable. Well, In my last attempt, it appeared to be like that. On Fri, Feb 13, 2009 at 5:33 PM, John Reid wrote: > ZaeX wrote: > >> And in my opinion, you'd better be careful if you expect that th

Re: [C++-sig] Call Policy for Singleton

2009-02-13 Thread John Reid
ZaeX wrote: And in my opinion, you'd better be careful if you expect that the c++ code and python code are using the same singleton instance. Because there're two Singleton::_instance if you export the Singleton class to Python. one at c++ side, the other at python side. I don't think this is

Re: [C++-sig] Call Policy for Singleton

2009-02-12 Thread ZaeX
I think reference_existing_object will work. And in my opinion, you'd better be careful if you expect that the c++ code and python code are using the same singleton instance. Because there're two Singleton::_instance if you export the Singleton class to Python. one at c++ side, the other at python

[C++-sig] Call Policy for Singleton

2009-02-12 Thread Balasubramanyam, Shivakumar
HI, The am not sure if which call policy I should be using for this particular use case, class Singleton { public: Singleton* create() { if(!_instance) { _instance = new Singleton(); } return _instance; } static Singleton* _instance; }