1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/deadlock/src/org/apidesign/deadlock/SynchronizedFields.java	Sat Jun 14 09:54:28 2008 +0200
     1.3 @@ -0,0 +1,26 @@
     1.4 +package org.apidesign.deadlock;
     1.5 +
     1.6 +public final class SynchronizedFields {
     1.7 +    // BEGIN: deadlock.holdsLock
     1.8 +    private int counter;
     1.9 +    
    1.10 +    private int getCounter() {
    1.11 +        assert Thread.holdsLock(this);
    1.12 +        return counter;
    1.13 +    } 
    1.14 +    
    1.15 +    private void setCounter(int c) {
    1.16 +        assert Thread.holdsLock(this);
    1.17 +        counter = c;
    1.18 +    }
    1.19 +    // END: deadlock.holdsLock
    1.20 +    
    1.21 +    
    1.22 +    public synchronized void increment() {
    1.23 +        setCounter(getCounter() + 1);
    1.24 +    }
    1.25 +    
    1.26 +    public void unsafeDecrement() {
    1.27 +        setCounter(getCounter() - 1);
    1.28 +    }
    1.29 +}