Java Doc for ThreadLocalDCL.java in  » Ajax » ItsNat » org » itsnat » impl » core » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » ItsNat » org.itsnat.impl.core.util   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.itsnat.impl.core.util.ThreadLocalDCL ThreadLocalDCL public class ThreadLocalDCL (Code) Clase de utilidad en el ámbito de resolver el problema del "double-checked locking" (DCL) http://www.javaworld.com/javaworld/jw-05-2001/jw-0525-double.html http://www.oreillynet.com/onjava/blog/2007/01/singletons_and_lazy_loading.html http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html http://en.wikipedia.org/wiki/Double-checked_locking En la JVM 1.5 se resuelve fácilmente con "volatile" pero en 1.4 e inferiores puede resolverse con un ThreadLocal aunque sólo en 1.4 es suficientemente rápido y no evita la sincronización la primera vez que se chequea http://www.javaworld.com/javaworld/jw-11-2001/jw-1116-dcl.html?page=3 author:    jmarranz Field Summary final protected static  boolean is1_4orLower      Method Summary public static  ThreadLocal newThreadLocal()      Field Detail is1_4orLower final protected static boolean is1_4orLower(Code) Method Detail newThreadLocal public static ThreadLocal newThreadLocal()(Code) 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)