#include <iostream.h>
#include "test.h"
#include <dlfcn.h>
#include <stdio.h>

class loadunload{

 public:
    void* load(char *p,test *&);
    void unload(void *,test *&);

};

typedef test* (*EP)();
void* loadunload::load(char *p,test *&t){

         char *error=NULL;
         void *handle=dlopen(p,RTLD_GLOBAL|RTLD_LAZY);
         if(!handle){
              error=dlerror();
              cerr<<"ERROR:dlopen "<<error<<endl; 
          }

       EP ep=(EP)dlsym(handle,"get");
         if((error=dlerror()) != NULL){
           cerr<<"ERROR:dlsym "<<error<<endl;
         }

     t=(*ep)();
     t->registerr();

     cout<<t->tm.p<<endl;

     return handle;
}

void loadunload::unload(void *handle,test *&t){

     cout<<t->tm.p<<endl;

    t->unregisterr();
    dlclose(handle);
}    


int main(){

  loadunload l;
  test *t1;
  test *t2;

  cout<<"Loading two libraries..."<<endl;
 
  cout<<"Loading libtest1.so..."<<endl;
  void *h1=l.load("./libtest1.so",t1);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();

  cout<<"Loading libtest2.so..."<<endl;
  void *h2=l.load("./libtest2.so",t2);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();


  cout<<"Unloading in reverse order.."<<endl;

  cout<<"UnLoading libtest2.so..."<<endl;
  l.unload(h2,t2);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();

  cout<<"UnLoading libtest1.so..."<<endl;
  l.unload(h1,t1);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();


  cout<<"Loading two libraries...again"<<endl;
 
  cout<<"Loading libtest1.so..."<<endl;
  h1=l.load("./libtest1.so",t1);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();

  cout<<"Loading libtest2.so..."<<endl;
  h2=l.load("./libtest2.so",t2);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();


  cout<<"Unloading in same order.."<<endl;

  cout<<"UnLoading libtest1.so..."<<endl;
  l.unload(h1,t1);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();

  cout<<"UnLoading libtest2.so..."<<endl;
  l.unload(h2,t2);
  cout<<"done.."<<endl;
  cout<<"Press any key to continue"<<endl;
  ::getchar();

}