--- jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java 2003/12/29 19:05:40 1.7 +++ jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java 2009/11/16 04:57:10 1.12 @@ -2,8 +2,8 @@ * Written by Doug Lea with assistance from members of JCP JSR-166 * Expert Group and released to the public domain, as explained at * http://creativecommons.org/licenses/publicdomain - * Other contributors include Andrew Wright, Jeffrey Hayes, - * Pat Fisher, Mike Judd. + * Other contributors include Andrew Wright, Jeffrey Hayes, + * Pat Fisher, Mike Judd. */ import java.util.concurrent.atomic.*; @@ -26,7 +26,7 @@ public class AtomicReferenceFieldUpdater * Construction with non-existent field throws RuntimeException */ public void testConstructor(){ - try{ + try { AtomicReferenceFieldUpdater a = AtomicReferenceFieldUpdater.newUpdater (AtomicReferenceFieldUpdaterTest.class, Integer.class, "y"); @@ -40,7 +40,7 @@ public class AtomicReferenceFieldUpdater * construction with field not of given type throws RuntimeException */ public void testConstructor2(){ - try{ + try { AtomicReferenceFieldUpdater a = AtomicReferenceFieldUpdater.newUpdater (AtomicReferenceFieldUpdaterTest.class, Integer.class, "z"); @@ -53,7 +53,7 @@ public class AtomicReferenceFieldUpdater * Constructor with non-volatile field throws exception */ public void testConstructor3(){ - try{ + try { AtomicReferenceFieldUpdater a = AtomicReferenceFieldUpdater.newUpdater (AtomicReferenceFieldUpdaterTest.class, Integer.class, "w"); @@ -66,20 +66,48 @@ public class AtomicReferenceFieldUpdater * get returns the last value set or assigned */ public void testGetSet(){ - AtomicReferenceFieldUpdatera = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } x = one; assertEquals(one,a.get(this)); a.set(this,two); assertEquals(two,a.get(this)); - a.set(this,-3); - assertEquals(-3,a.get(this)); - + a.set(this,m3); + assertEquals(m3,a.get(this)); } + + /** + * get returns the last value lazySet by same thread + */ + public void testGetLazySet(){ + AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } + x = one; + assertEquals(one,a.get(this)); + a.lazySet(this,two); + assertEquals(two,a.get(this)); + a.lazySet(this,m3); + assertEquals(m3,a.get(this)); + } + /** * compareAndSet succeeds in changing value if equal to expected else fails */ public void testCompareAndSet(){ - AtomicReferenceFieldUpdatera = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } x = one; assertTrue(a.compareAndSet(this,one,two)); assertTrue(a.compareAndSet(this,two,m4)); @@ -96,11 +124,16 @@ public class AtomicReferenceFieldUpdater */ public void testCompareAndSetInMultipleThreads() { x = one; - final AtomicReferenceFieldUpdatera = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + final AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } Thread t = new Thread(new Runnable() { public void run() { - while(!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield(); + while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield(); }}); try { t.start(); @@ -109,22 +142,27 @@ public class AtomicReferenceFieldUpdater assertFalse(t.isAlive()); assertEquals(a.get(this), three); } - catch(Exception e) { + catch (Exception e) { unexpectedException(); } } /** * repeated weakCompareAndSet succeeds in changing value when equal - * to expected + * to expected */ public void testWeakCompareAndSet(){ - AtomicReferenceFieldUpdatera = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } x = one; - while(!a.weakCompareAndSet(this,one,two)); - while(!a.weakCompareAndSet(this,two,m4)); + while (!a.weakCompareAndSet(this,one,two)); + while (!a.weakCompareAndSet(this,two,m4)); assertEquals(m4,a.get(this)); - while(!a.weakCompareAndSet(this,m4,seven)); + while (!a.weakCompareAndSet(this,m4,seven)); assertEquals(seven,a.get(this)); } @@ -132,7 +170,12 @@ public class AtomicReferenceFieldUpdater * getAndSet returns previous value and sets to given value */ public void testGetAndSet(){ - AtomicReferenceFieldUpdatera = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + AtomicReferenceFieldUpdatera; + try { + a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x"); + } catch (RuntimeException ok) { + return; + } x = one; assertEquals(one,a.getAndSet(this, zero)); assertEquals(zero,a.getAndSet(this,m10));