Name: mc57594 Date: 11/15/99


java version "1.2.2"
Classic VM (build JDK-1.2.2-W, native threads, symcjit)


The wait() and notify() methods should have a new Condition parameter, so that,
you can wait in different queues for different conditions. Example:

class Consumer {
   ...
   if (num_elements == 0 )
         wait (production);

   <consume the element>

   --num_elements;
   notify (consumption)
   ...
}

 


class Producer {
   ...
   if (num_elements == MAX )
         wait (consumption);

   <produce the element>

   ++num_elements;
   notify (production)
   ...
}



The code is more clear, you avoid while loops and you avoid to wake up a process
that doesn't have to be notified. This is the natural way that monitors are
usually implemented.
(Review ID: 97799)
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