Singleton Class

[Kumar Saurabh]

Hi,

I am using a singleton class like the one given below:

class singleton
{
static singleton *object;
singleton();

public:
getInstance();
~singleton();
};
From some other function i try to do the following:

singleton *p= singleton :: getInstance();
detele p;
But here my program dumps. What could be the problem.

Thanks and Regards,
Saurabh

[Ben Pope]

Kumar Saurabh wrote:

Hi,

I am using a singleton class like the one given below:

class singleton
{
static singleton *object; // Where is the singleton allocated? singleton();

public:
getInstance();
// What does this return?
~singleton();
};
From some other function i try to do the following:

singleton *p= singleton :: getInstance();
detele p;
The singleton object should deal with it's own lifetime, why are you
trying to delete it?
But here my program dumps. What could be the problem.

I think you need to re-read that chapter of your book, or get a better book.

Ben Pope
--
I'm not just a number. To many, I'm known as a string...

[Rolf Magnus]

Kumar Saurabh wrote:

Hi,

I am using a singleton class like the one given below:

class singleton
{
static singleton *object;
singleton();

public:
getInstance();
~singleton();
};
From some other function i try to do the following:

singleton *p= singleton :: getInstance();
detele p;
But here my program dumps. What could be the problem.

That depends on the implementation the getInstance() function.

[Dave Townsend]

"Kumar Saurabh" <ku***********@motorola.com> wrote in message
news:43**************@motorola.com...

Hi,

I am using a singleton class like the one given below:

class singleton
{
static singleton *object;
singleton();

public:
getInstance();
~singleton();
};
From some other function i try to do the following:

singleton *p= singleton :: getInstance();
detele p;
But here my program dumps. What could be the problem.

Thanks and Regards,
Saurabh

If you program craps out deleting p, then p is bad, either its not
initialized
or you've already deleted it or perhaps its pointing to something which is
not allocated ( like a static object ). Post the entire listing of your
code.

[Jaspreet]

Kumar Saurabh wrote:

Hi,

I am using a singleton class like the one given below:

class singleton
{
static singleton *object;
singleton();

public:
getInstance();
~singleton();
};
From some other function i try to do the following:

singleton *p= singleton :: getInstance();
detele p;
But here my program dumps. What could be the problem.

Thanks and Regards,
Saurabh

Could we have the code please ? Did you intialise object ? Remember it
is static and you need to intialise/allocate it outside your class
declaration.

[shankha]

it would be nice if you can get us the code .. Have gdb running on your
executable it would tell you how it is happening ..(PRINT p's address
every time )