[ Article crossposted from comp.lang.c++ ]
[ Author was Hello ]
[ Posted on Wed, 10 May 1995 06:51:05 GMT ]

Hello Netters,

    I got a problem when overloading the new function ...
    How can I just invoke the new in the class OBJ..
    and doesn't make the call the the global overloading new function?
    the code fragment is shown as below ..

    Thanks!

------------------------------------------------------
khl@snoopy.ncku.edu.tw


    void *operator new(size_t s)
    {
 void *p;

 printf("My overloading new!\n");
 ....
 p = malloc(...);
        ....
 return p;
     };

    class OBJ {
      ....
      void *operator new(size_t);
      void operator delete(void*);  // append to list ..
    };

    void* OBJ::operator new(size s)
    {
      if (list->empty())
   return new char[BYTE_PER_BLOCK];
      else {
   printf("Get from list -");
          return (list->retrieve());
      }
    }

    void main()
    {
       OBJ *abc;

       for (int i=0; i<100000; i++) {
    abc = new OBJ;
    delete abc;
       }
     }

     It's result :- (try on BC++ and Zortech C++)
     ..
     Get from list - My overloading new!
     ...             ^^^^^^^^^^^^^^^^^^^  ??
     No enough memory space.....