Original Post
Ok first off. I’ve read in a tutorial that in single threaded applications doing something like: is alright, but once you do it in multithreaded applications it becomes a problem because of the way static memory is allocated. So, in multithreaded applications we need to do something like this: My first question: In a multithreaded application, how come we can use static member variables, but we cannot use static variables when it is declared inside a function. My second question: How do I not get linker errors when I use the statement right outside of the class? Let me clarify: I use the format where I put everything in my main header like so and then each of my cpp files has the “main.h” header in it. I get linker errors because “class Singleton * Singleton::pInstance" has already been defined in another object. Does anyone have a solution for me? [Edited by - ManaStone on September 18, 2005 6:39:25 PM]
Singleton* getInstance()
{
static Singleton Instance;
return &Instance.
}
class Singleton{
static Singleton *pInstance;
Singleton *getInstance()
{
if(pInstance==NULL)
pInstance= new Singleton;
return pInstance;
}
};
Singleton *Singleton::pInstance=NULL;
Singleton *Singleton::pInstance=NULL;
#ifndef _MY_MAIN_
#define _MY_MAIN_
#include <iostream.h>
#include <windows.h>
#include <gl\Gl.h>
#include "Singleton.h"
#include "cSmtPtr.h"
#endif
