FINAL EXAM SCHEDULE:

  Monday 5/4   3-6pm  Ricketts 203

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 semaphore empty = 12, full = 0;
 semaphore mutex = 1;
 int index_producer, index_consumer;

 /** PRODUCER **/
 while ( true )
 {
   /* produce an element */

   wait( empty );  /* any empty slots? */

   wait( mutex );

   /* add element to empty slot of buffer */
   /* what do we do if the buffer is full? */

   signal( mutex );

   signal( full ); /* signal there's one more
                         element to consume */
 }

 /** CONSUMER **/
 while ( true )
 {
   wait( full );  /* any full slots? */

   wait( mutex );

   /* consume item from the buffer */

   signal( mutex );

   signal( empty );   /* adds one to empty */

 }