--- jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java 2003/10/25 16:02:13 1.5 +++ jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java 2009/11/16 04:57:10 1.11 @@ -1,8 +1,9 @@ /* - * Written by members of JCP JSR-166 Expert Group and released to the - * public domain. Use, modify, and redistribute this code in any way - * without acknowledgement. Other contributors include Andrew Wright, - * Jeffrey Hayes, Pat Fischer, Mike Judd. + * 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. */ import java.util.concurrent.atomic.*; @@ -22,11 +23,11 @@ public class AtomicLongFieldUpdaterTest } /** - * Contruction with non-existent field throws RuntimeException + * Construction with non-existent field throws RuntimeException */ public void testConstructor(){ - try{ - AtomicLongFieldUpdater + try { + AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater (AtomicLongFieldUpdaterTest.class, "y"); shouldThrow(); @@ -38,8 +39,8 @@ public class AtomicLongFieldUpdaterTest * construction with field not of given type throws RuntimeException */ public void testConstructor2(){ - try{ - AtomicLongFieldUpdater + try { + AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater (AtomicLongFieldUpdaterTest.class, "z"); shouldThrow(); @@ -51,8 +52,8 @@ public class AtomicLongFieldUpdaterTest * construction with non-volatile field throws RuntimeException */ public void testConstructor3(){ - try{ - AtomicLongFieldUpdater + try { + AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater (AtomicLongFieldUpdaterTest.class, "w"); shouldThrow(); @@ -65,20 +66,49 @@ public class AtomicLongFieldUpdaterTest * get returns the last value set or assigned */ public void testGetSet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(1,a.get(this)); a.set(this,2); assertEquals(2,a.get(this)); a.set(this,-3); assertEquals(-3,a.get(this)); - } + + /** + * get returns the last value lazySet by same thread + */ + public void testGetLazySet(){ + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } + x = 1; + assertEquals(1,a.get(this)); + a.lazySet(this,2); + assertEquals(2,a.get(this)); + a.lazySet(this,-3); + assertEquals(-3,a.get(this)); + } + + /** * compareAndSet succeeds in changing value if equal to expected else fails */ public void testCompareAndSet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertTrue(a.compareAndSet(this,1,2)); assertTrue(a.compareAndSet(this,2,-4)); @@ -96,11 +126,16 @@ public class AtomicLongFieldUpdaterTest */ public void testCompareAndSetInMultipleThreads() { x = 1; - final AtomicLongFieldUpdatera = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + final AtomicLongFieldUpdatera; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } Thread t = new Thread(new Runnable() { public void run() { - while(!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield(); + while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield(); }}); try { t.start(); @@ -109,22 +144,27 @@ public class AtomicLongFieldUpdaterTest assertFalse(t.isAlive()); assertEquals(a.get(this), 3); } - catch(Exception e) { + catch (Exception e) { unexpectedException(); } } /** * repeated weakCompareAndSet succeeds in changing value when equal - * to expected + * to expected */ public void testWeakCompareAndSet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; - while(!a.weakCompareAndSet(this,1,2)); - while(!a.weakCompareAndSet(this,2,-4)); + while (!a.weakCompareAndSet(this,1,2)); + while (!a.weakCompareAndSet(this,2,-4)); assertEquals(-4,a.get(this)); - while(!a.weakCompareAndSet(this,-4,7)); + while (!a.weakCompareAndSet(this,-4,7)); assertEquals(7,a.get(this)); } @@ -132,7 +172,12 @@ public class AtomicLongFieldUpdaterTest * getAndSet returns previous value and sets to given value */ public void testGetAndSet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(1,a.getAndSet(this, 0)); assertEquals(0,a.getAndSet(this,-10)); @@ -143,7 +188,12 @@ public class AtomicLongFieldUpdaterTest * getAndAdd returns previous value and adds given value */ public void testGetAndAdd(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(1,a.getAndAdd(this,2)); assertEquals(3,a.get(this)); @@ -155,7 +205,12 @@ public class AtomicLongFieldUpdaterTest * getAndDecrement returns previous value and decrements */ public void testGetAndDecrement(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(1,a.getAndDecrement(this)); assertEquals(0,a.getAndDecrement(this)); @@ -166,7 +221,12 @@ public class AtomicLongFieldUpdaterTest * getAndIncrement returns previous value and increments */ public void testGetAndIncrement(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(1,a.getAndIncrement(this)); assertEquals(2,a.get(this)); @@ -181,7 +241,12 @@ public class AtomicLongFieldUpdaterTest * addAndGet adds given value to current, and returns current value */ public void testAddAndGet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(3,a.addAndGet(this,2)); assertEquals(3,a.get(this)); @@ -193,7 +258,12 @@ public class AtomicLongFieldUpdaterTest * decrementAndGet decrements and returns current value */ public void testDecrementAndGet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(0,a.decrementAndGet(this)); assertEquals(-1,a.decrementAndGet(this)); @@ -205,7 +275,12 @@ public class AtomicLongFieldUpdaterTest * incrementAndGet increments and returns current value */ public void testIncrementAndGet(){ - AtomicLongFieldUpdater a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + AtomicLongFieldUpdater a; + try { + a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); + } catch (RuntimeException ok) { + return; + } x = 1; assertEquals(2,a.incrementAndGet(this)); assertEquals(2,a.get(this));