Java Doc for SynchronizedRef.java in  » Ajax » Laszlo-4.0.10 » EDU » oswego » cs » dl » util » concurrent » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » EDU.oswego.cs.dl.util.concurrent   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    EDU.oswego.cs.dl.util.concurrent.SynchronizedVariable       EDU.oswego.cs.dl.util.concurrent.SynchronizedRef All known Subclasses:   EDU.oswego.cs.dl.util.concurrent.WaitableRef, SynchronizedRef public class SynchronizedRef extends SynchronizedVariable (Code) A simple class maintaining a single reference variable that is always accessed and updated under synchronization. [ Introduction to this package. ] Field Summary protected  Object value_      Constructor Summary public   SynchronizedRef(Object initialValue)      Create a SynchronizedRef initially holding the given reference and using its own internal lock. public   SynchronizedRef(Object initialValue, Object lock)      Make a new SynchronizedRef with the given initial value, and using the supplied lock. Method Summary public  boolean commit(Object assumedValue, Object newValue)      Set value to newValue only if it is currently assumedValue. final public  Object get()      public  Object set(Object newValue)      Set to newValue. public  Object swap(SynchronizedRef other)      Atomically swap values with another SynchronizedRef. Field Detail value_ protected Object value_(Code) The maintained reference * Constructor Detail SynchronizedRef public SynchronizedRef(Object initialValue)(Code) Create a SynchronizedRef initially holding the given reference and using its own internal lock. SynchronizedRef public SynchronizedRef(Object initialValue, Object lock)(Code) Make a new SynchronizedRef with the given initial value, and using the supplied lock. Method Detail commit public boolean commit(Object assumedValue, Object newValue)(Code) Set value to newValue only if it is currently assumedValue. true if successful get final public Object get()(Code) Return the current value set public Object set(Object newValue)(Code) Set to newValue. the old value swap public Object swap(SynchronizedRef other)(Code) Atomically swap values with another SynchronizedRef. Uses identityHashCode to avoid deadlock when two SynchronizedRefs attempt to simultaneously swap with each other. (Note: Ordering via identyHashCode is not strictly guaranteed by the language specification to return unique, orderable values, but in practice JVMs rely on them being unique.) the new value Fields inherited from EDU.oswego.cs.dl.util.concurrent.SynchronizedVariable final protected Object lock_(Code)(Java Doc) Methods inherited from EDU.oswego.cs.dl.util.concurrent.SynchronizedVariable public void execute(Runnable command) throws InterruptedException(Code)(Java Doc) public Object getLock()(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)