/** repeated weakCompareAndSet succeeds in changing values when equal to expected */ public void testWeakCompareAndSet() { int[] mark = new int[1]; AtomicStampedReference ai = new AtomicStampedReference(one, 0); assertSame(one, ai.get(mark)); assertEquals(0, ai.getStamp()); assertEquals(0, mark[0]); do {} while (!ai.weakCompareAndSet(one, two, 0, 0)); assertSame(two, ai.get(mark)); assertEquals(0, mark[0]); do {} while (!ai.weakCompareAndSet(two, m3, 0, 1)); assertSame(m3, ai.get(mark)); assertEquals(1, mark[0]); }