hi, I have some problem about transfer-ownership. C++ code is like this:
class RefCounter {
int _count;
public:
RefCounter() : _count(1) {}
virtual RefCounter() {}
void addRef() { ++_count; }
void release() { --_count; if (_count == 0) delete this; }
};
class A : public RefCounter {...};
class B {
public:
void setA(A* a) { // B takes the ownership of A.
_a = a;
a.addRef();
}
private:
A* _a;
};
So, in python, I use these classes like:
a = A() # the reference count of a is 1 now.
b = B()
b.setA(a) # B take the ownership of A, and now the reference count is 2.
a.release() # a should call release to decrease the reference count, but now
a is invalid. Python says: did not match C++ signature.
I can change the C++ code to solve this problem, but I really don't want to
change C++ code.
It's better to solve it by other way.
Is there any one could give me some advice?
THANK YOU VERY MUCH.
--
View this message in context:
http://boost.2283326.n4.nabble.com/transfer-ownership-problem-tp3495846p3495846.html
Sent from the Python - c++-sig mailing list archive at Nabble.com.
_______________________________________________
Cplusplus-sig mailing list
Cplusplus-sig@python.org
http://mail.python.org/mailman/listinfo/cplusplus-sig
