Overriding new and delete again...

[Jesper Madsen]

Can I confine overrides of new and delete to certain namesspaces, f.ex. by
just introducing the modfied operator new in namespace GUI?? Or should I
ask, if I declare operator new in a namespace, is it still global operator
new I define??

This is just for doing some memory tracking, so it would be nice if I could
keep namespace std:: out of the game.. and avoid STL.

I do not have any using std namespace; or such in my code, so this will not
bother me..

Jesper

[Boris Kolpackov]

"Jesper Madsen" <ba***@mail.stofanet.dk> writes:

Can I confine overrides of new and delete to certain namesspaces, f.ex. by
just introducing the modfied operator new in namespace GUI?? Or should I
ask, if I declare operator new in a namespace, is it still global operator
new I define??

3.7.3.1/1:

An allocation function shall be a class member function or a global function;
a program is ill-formed if an allocation function is declared in a namespace
scope other than global scope or declared static in global scope.

3.7.3.2/1:

Deallocation functions shall be class member functions or global functions;
a program is ill-formed if deallocation functions are declared in a namespace
scope other than global scope or declared static in global scope.
The closest you can get is by using a common base for your GUI objects. E.g.:

namespace GUI
{
struct Object
{
static void*
operator new (size_t) throw (std::bad_alloc);

static void
operator delete (void*);

// ...

};

class Window : public virtual Object
{
// ...
};
}

hth,
-boris

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Boris Kolpackov http://kolpackov.net
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