consumeinteger.java

解决线程死锁问题的 生产者 消费者程序

// Fig. 15.6: ConsumeInteger.java
// Definition of threaded class ConsumeInteger
import javax.swing.JTextArea;

public class ConsumeInteger extends Thread {
   private HoldIntegerSynchronized cHold;
   private JTextArea output;

   public ConsumeInteger( HoldIntegerSynchronized h,
                          JTextArea o )
   {
      super( "ConsumeInteger" );
      cHold = h;
      output = o;
   }

   public void run()
   {
      int val, sum = 0;

      do {
         // sleep for a random interval
         try {
            Thread.sleep( (int) ( Math.random() * 3000 ) );
         }
         catch( InterruptedException e ) {
            System.err.println( e.toString() );
         }

         val = cHold.getSharedInt();
         sum += val;
      } while ( val != 10 );

      output.append( "\n" + getName() +
         " totaling: " + sum +
         "\nstop " + getName() + "\n" );
   }
}

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 * (C) Copyright 1999 by Deitel & Associates, Inc. and Prentice Hall.     *
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