// bugsbunny.c 
// by Michael Collins
//

#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

int
main()
{
  key_t shkey     = ftok("/dev/null",'A');            //Make a key identifier so daffy can find the shared memory
  int   shared_id = shmget(shkey, 8192, IPC_CREAT); //Create a new shared memory segment
  char* sharedmem = shmat(shared_id, 0, 0);         //Map it onto our virtual address space

  sprintf(sharedmem,"Duck Season");  //Lets make it Duck season.
  printf("I, Bugs, think it should be %s\n", sharedmem);

  while( strcmp(sharedmem,"Duck Season")==0 );
  sprintf(sharedmem,"Duck Season");  //Daffy changed it to Rabbit season, better change it back!
  printf("Well, I, Bugs, say its %s\n", sharedmem);

  shmctl(shared_id,IPC_RMID,NULL); //Make sure it gets destroyed when everyone detaches from it
  shmdt(sharedmem);                //Unmap the segment from our virtual space
}