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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2005, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.runtime;
/**
* Blocking (i.e. non-atomic) placeholder for Java 1.5's
* <code>java.util.concurrent.atomic.AtomicReference</code> class.
*/
public class AtomicReference implements java.io.Serializable {
private Object value;
public AtomicReference(Object value) {
this.value = value;
}
public Object get() {
return value;
}
public Object getAndSet(Object update) {
Object previousValue = value;
value = update;
return previousValue;
}
public void set(Object update) {
value = update;
}
public synchronized boolean compareAndSet(Object expected, Object update) {
if (value == expected) {
value = update;
return true;
} else
return false;
}
public boolean weakCompareAndSet(Object expected, Object update) {
return compareAndSet(expected, update);
}
public String toString() {
return value.toString();
}
}
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