--- jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java	2003/12/27 19:26:43	1.6
+++ jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java	2013/04/01 20:58:58	1.24
@@ -1,218 +1,234 @@
 /*
  * 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. 
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
+ * Pat Fisher, Mike Judd.
  */
 
-import java.util.concurrent.atomic.*;
 import junit.framework.*;
-import java.util.*;
+import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 
 public class AtomicIntegerFieldUpdaterTest extends JSR166TestCase {
     volatile int x = 0;
     int w;
     long z;
-    public static void main(String[] args){
+    public static void main(String[] args) {
         junit.textui.TestRunner.run(suite());
     }
     public static Test suite() {
         return new TestSuite(AtomicIntegerFieldUpdaterTest.class);
     }
 
+    AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> updaterFor(String fieldName) {
+        return AtomicIntegerFieldUpdater.newUpdater
+            (AtomicIntegerFieldUpdaterTest.class, fieldName);
+    }
+
     /**
-     * Contruction with non-existent field throws RuntimeException
+     * Construction with non-existent field throws RuntimeException
      */
     public void testConstructor() {
-        try{
-            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> 
-                a = AtomicIntegerFieldUpdater.newUpdater
-                (AtomicIntegerFieldUpdaterTest.class, "y");
+        try {
+            updaterFor("y");
             shouldThrow();
-        }
-        catch (RuntimeException rt) {}
+        } catch (RuntimeException success) {}
     }
 
     /**
      * construction with field not of given type throws RuntimeException
      */
     public void testConstructor2() {
-        try{
-            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> 
-                a = AtomicIntegerFieldUpdater.newUpdater
-                (AtomicIntegerFieldUpdaterTest.class, "z");
+        try {
+            updaterFor("z");
             shouldThrow();
-        }
-        catch (RuntimeException rt) {}
+        } catch (RuntimeException success) {}
     }
 
     /**
      * construction with non-volatile field throws RuntimeException
      */
     public void testConstructor3() {
-        try{
-            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> 
-                a = AtomicIntegerFieldUpdater.newUpdater
-                (AtomicIntegerFieldUpdaterTest.class, "w");
+        try {
+            updaterFor("w");
             shouldThrow();
-        }
-        catch (RuntimeException rt) {}
+        } catch (RuntimeException success) {}
     }
 
     /**
-     *  get returns the last value set or assigned
+     * get returns the last value set or assigned
      */
     public void testGetSet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         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));
-	
+        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() {
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
+        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() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertTrue(a.compareAndSet(this,1,2));
-	assertTrue(a.compareAndSet(this,2,-4));
-	assertEquals(-4,a.get(this));
-	assertFalse(a.compareAndSet(this,-5,7));
-	assertFalse((7 == a.get(this)));
-	assertTrue(a.compareAndSet(this,-4,7));
-	assertEquals(7,a.get(this));
+        assertTrue(a.compareAndSet(this, 1, 2));
+        assertTrue(a.compareAndSet(this, 2, -4));
+        assertEquals(-4, a.get(this));
+        assertFalse(a.compareAndSet(this, -5, 7));
+        assertEquals(-4, a.get(this));
+        assertTrue(a.compareAndSet(this, -4, 7));
+        assertEquals(7, a.get(this));
     }
 
-
     /**
      * compareAndSet in one thread enables another waiting for value
      * to succeed
      */
-    public void testCompareAndSetInMultipleThreads() {
+    public void testCompareAndSetInMultipleThreads() throws Exception {
         x = 1;
-        final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
 
-        Thread t = new Thread(new Runnable() {
-                public void run() {
-                    while(!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3)) Thread.yield();
-                }});
-        try {
-            t.start();
-            assertTrue(a.compareAndSet(this, 1, 2));
-            t.join(LONG_DELAY_MS);
-            assertFalse(t.isAlive());
-            assertEquals(a.get(this), 3);
-        }
-        catch(Exception e) {
-            unexpectedException();
-        }
+        Thread t = new Thread(new CheckedRunnable() {
+            public void realRun() {
+                while (!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3))
+                    Thread.yield();
+            }});
+
+        t.start();
+        assertTrue(a.compareAndSet(this, 1, 2));
+        t.join(LONG_DELAY_MS);
+        assertFalse(t.isAlive());
+        assertEquals(3, a.get(this));
     }
 
     /**
      * repeated weakCompareAndSet succeeds in changing value when equal
-     * to expected 
+     * to expected
      */
     public void testWeakCompareAndSet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	while(!a.weakCompareAndSet(this,1,2));
-	while(!a.weakCompareAndSet(this,2,-4));
-	assertEquals(-4,a.get(this));
-	while(!a.weakCompareAndSet(this,-4,7));
-	assertEquals(7,a.get(this));
+        while (!a.weakCompareAndSet(this, 1, 2));
+        while (!a.weakCompareAndSet(this, 2, -4));
+        assertEquals(-4, a.get(this));
+        while (!a.weakCompareAndSet(this, -4, 7));
+        assertEquals(7, a.get(this));
     }
 
     /**
-     *  getAndSet returns previous value and sets to given value
+     * getAndSet returns previous value and sets to given value
      */
     public void testGetAndSet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(1,a.getAndSet(this, 0));
-	assertEquals(0,a.getAndSet(this,-10));
-	assertEquals(-10,a.getAndSet(this,1));
+        assertEquals(1, a.getAndSet(this, 0));
+        assertEquals(0, a.getAndSet(this, -10));
+        assertEquals(-10, a.getAndSet(this, 1));
     }
 
     /**
      * getAndAdd returns previous value and adds given value
      */
     public void testGetAndAdd() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(1,a.getAndAdd(this,2));
-	assertEquals(3,a.get(this));
-	assertEquals(3,a.getAndAdd(this,-4));
-	assertEquals(-1,a.get(this));
+        assertEquals(1, a.getAndAdd(this, 2));
+        assertEquals(3, a.get(this));
+        assertEquals(3, a.getAndAdd(this, -4));
+        assertEquals(-1, a.get(this));
     }
 
     /**
      * getAndDecrement returns previous value and decrements
      */
     public void testGetAndDecrement() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(1,a.getAndDecrement(this));
-	assertEquals(0,a.getAndDecrement(this));
-	assertEquals(-1,a.getAndDecrement(this));
+        assertEquals(1, a.getAndDecrement(this));
+        assertEquals(0, a.getAndDecrement(this));
+        assertEquals(-1, a.getAndDecrement(this));
     }
 
     /**
      * getAndIncrement returns previous value and increments
      */
     public void testGetAndIncrement() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(1,a.getAndIncrement(this));
-	assertEquals(2,a.get(this));
-	a.set(this,-2);
-	assertEquals(-2,a.getAndIncrement(this));
-	assertEquals(-1,a.getAndIncrement(this));
-	assertEquals(0,a.getAndIncrement(this));
-	assertEquals(1,a.get(this));
+        assertEquals(1, a.getAndIncrement(this));
+        assertEquals(2, a.get(this));
+        a.set(this, -2);
+        assertEquals(-2, a.getAndIncrement(this));
+        assertEquals(-1, a.getAndIncrement(this));
+        assertEquals(0, a.getAndIncrement(this));
+        assertEquals(1, a.get(this));
     }
 
     /**
      * addAndGet adds given value to current, and returns current value
      */
     public void testAddAndGet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(3,a.addAndGet(this,2));
-	assertEquals(3,a.get(this));
-	assertEquals(-1,a.addAndGet(this,-4));
-	assertEquals(-1,a.get(this));
+        assertEquals(3, a.addAndGet(this, 2));
+        assertEquals(3, a.get(this));
+        assertEquals(-1, a.addAndGet(this, -4));
+        assertEquals(-1, a.get(this));
     }
 
     /**
      * decrementAndGet decrements and returns current value
      */
     public void testDecrementAndGet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(0,a.decrementAndGet(this));
-	assertEquals(-1,a.decrementAndGet(this));
-	assertEquals(-2,a.decrementAndGet(this));
-	assertEquals(-2,a.get(this));
+        assertEquals(0, a.decrementAndGet(this));
+        assertEquals(-1, a.decrementAndGet(this));
+        assertEquals(-2, a.decrementAndGet(this));
+        assertEquals(-2, a.get(this));
     }
 
     /**
      * incrementAndGet increments and returns current value
      */
     public void testIncrementAndGet() {
-        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
+        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
+        a = updaterFor("x");
         x = 1;
-	assertEquals(2,a.incrementAndGet(this));
-	assertEquals(2,a.get(this));
-	a.set(this,-2);
-	assertEquals(-1,a.incrementAndGet(this));
-	assertEquals(0,a.incrementAndGet(this));
-	assertEquals(1,a.incrementAndGet(this));
-	assertEquals(1,a.get(this));
+        assertEquals(2, a.incrementAndGet(this));
+        assertEquals(2, a.get(this));
+        a.set(this, -2);
+        assertEquals(-1, a.incrementAndGet(this));
+        assertEquals(0, a.incrementAndGet(this));
+        assertEquals(1, a.incrementAndGet(this));
+        assertEquals(1, a.get(this));
     }
 
 }