jtulach@103: package org.apidesign.deadlock;
jtulach@103: 
jtulach@103: public final class SynchronizedFieldsInternally {
jtulach@103:     // BEGIN: deadlock.ownLock
jtulach@103:     private final Object LOCK = new Object();
jtulach@103:     private int counter;
jtulach@103:     
jtulach@103:     private int getCounter() {
jtulach@103:         assert Thread.holdsLock(LOCK);
jtulach@103:         return counter;
jtulach@103:     } 
jtulach@103:     
jtulach@103:     private void setCounter(int c) {
jtulach@103:         assert Thread.holdsLock(LOCK);
jtulach@103:         counter = c;
jtulach@103:     }
jtulach@103:     // END: deadlock.ownLock
jtulach@103:     
jtulach@103:     
jtulach@103:     public void increment() {
jtulach@103:         synchronized (LOCK) {
jtulach@103:             setCounter(getCounter() + 1);
jtulach@103:         }
jtulach@103:     }
jtulach@103:     
jtulach@103:     public void unsafeDecrement() {
jtulach@103:         setCounter(getCounter() - 1);
jtulach@103:     }
jtulach@103: }