#include <iostream.h>
#include <dlfcn.h>
#include "shlib.hpp"

typedef void (*func)(int);

void* getlib()
{
    void* shlib = dlopen("./shlib.so", RTLD_LAZY);
  if (!shlib) 
    {
      cerr << "dlopen: " << dlerror() << endl;
      exit(0);
    }
  return shlib;
}


func getsym(void* shlib)
{
  void *sym = dlsym(shlib, "doit");
  if (!sym)
    {
      cerr << "dlsym: " << dlerror() << endl;
      exit(0);
    }

  return func(sym);
}

int main()
{
  void *lib = getlib();
  getsym(lib)(0);
  dlclose(lib);
  
  lib = getlib();
  getsym(lib)(1);
  dlclose(lib);

  lib = getlib();
  getsym(lib)(1);
  getsym(lib)(2);
  dlclose(lib);

  lib = getlib();
  getsym(lib)(2);
  getsym(lib)(1);
  dlclose(lib);

  return 0;
}