thread stack sharing

stack_share(void *arg)
{
 /* Share the stack **/
  mmap(addr, len, prot, flags, fd, off);
  
  /* Other relevant information **/
}

POSIX_Init()
{
  pthread_create(&id, &attr, stack_share, arg);
}

/** mmap implementation  */

mmap()
{
  executing = Thread_Get_executing();
  
  Stack_protection_share_stack(); 
}