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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.math.BigInteger; |
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import java.security.*; |
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|
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public class ExecutorsTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ExecutorsTest.class); |
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} |
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|
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/** |
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* A newCachedThreadPool can execute runnables |
27 |
*/ |
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public void testNewCachedThreadPool1() { |
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ExecutorService e = Executors.newCachedThreadPool(); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A newCachedThreadPool with given ThreadFactory can execute runnables |
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*/ |
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public void testNewCachedThreadPool2() { |
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ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A newCachedThreadPool with null ThreadFactory throws NPE |
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*/ |
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public void testNewCachedThreadPool3() { |
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try { |
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ExecutorService e = Executors.newCachedThreadPool(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* A new SingleThreadExecutor can execute runnables |
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*/ |
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public void testNewSingleThreadExecutor1() { |
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ExecutorService e = Executors.newSingleThreadExecutor(); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A new SingleThreadExecutor with given ThreadFactory can execute runnables |
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*/ |
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public void testNewSingleThreadExecutor2() { |
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ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A new SingleThreadExecutor with null ThreadFactory throws NPE |
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*/ |
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public void testNewSingleThreadExecutor3() { |
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try { |
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ExecutorService e = Executors.newSingleThreadExecutor(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* A new SingleThreadExecutor cannot be casted to concrete implementation |
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*/ |
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public void testCastNewSingleThreadExecutor() { |
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ExecutorService e = Executors.newSingleThreadExecutor(); |
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try { |
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ThreadPoolExecutor tpe = (ThreadPoolExecutor)e; |
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shouldThrow(); |
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} catch (ClassCastException success) { |
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} finally { |
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joinPool(e); |
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} |
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} |
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|
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|
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/** |
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* A new newFixedThreadPool can execute runnables |
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*/ |
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public void testNewFixedThreadPool1() { |
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ExecutorService e = Executors.newFixedThreadPool(2); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A new newFixedThreadPool with given ThreadFactory can execute runnables |
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*/ |
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public void testNewFixedThreadPool2() { |
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ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* A new newFixedThreadPool with null ThreadFactory throws NPE |
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*/ |
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public void testNewFixedThreadPool3() { |
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try { |
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ExecutorService e = Executors.newFixedThreadPool(2, null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* A new newFixedThreadPool with 0 threads throws IAE |
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*/ |
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public void testNewFixedThreadPool4() { |
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try { |
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ExecutorService e = Executors.newFixedThreadPool(0); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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|
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/** |
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* An unconfigurable newFixedThreadPool can execute runnables |
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*/ |
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public void testunconfigurableExecutorService() { |
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ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2)); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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joinPool(e); |
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} |
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|
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/** |
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* unconfigurableExecutorService(null) throws NPE |
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*/ |
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public void testunconfigurableExecutorServiceNPE() { |
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try { |
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ExecutorService e = Executors.unconfigurableExecutorService(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* unconfigurableScheduledExecutorService(null) throws NPE |
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*/ |
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public void testunconfigurableScheduledExecutorServiceNPE() { |
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try { |
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ExecutorService e = Executors.unconfigurableScheduledExecutorService(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* a newSingleThreadScheduledExecutor successfully runs delayed task |
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*/ |
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public void testNewSingleThreadScheduledExecutor() throws Exception { |
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ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor(); |
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try { |
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final CountDownLatch done = new CountDownLatch(1); |
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final Runnable task = new CheckedRunnable() { |
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public void realRun() { |
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done.countDown(); |
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}}; |
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Future f = p.schedule(Executors.callable(task, Boolean.TRUE), |
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SHORT_DELAY_MS, MILLISECONDS); |
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assertFalse(f.isDone()); |
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assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get()); |
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assertTrue(f.isDone()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* a newScheduledThreadPool successfully runs delayed task |
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*/ |
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public void testnewScheduledThreadPool() throws Exception { |
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ScheduledExecutorService p = Executors.newScheduledThreadPool(2); |
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try { |
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final CountDownLatch done = new CountDownLatch(1); |
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final Runnable task = new CheckedRunnable() { |
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public void realRun() { |
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done.countDown(); |
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}}; |
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Future f = p.schedule(Executors.callable(task, Boolean.TRUE), |
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SHORT_DELAY_MS, MILLISECONDS); |
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assertFalse(f.isDone()); |
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assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get()); |
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assertTrue(f.isDone()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* an unconfigurable newScheduledThreadPool successfully runs delayed task |
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*/ |
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public void testunconfigurableScheduledExecutorService() throws Exception { |
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ScheduledExecutorService p = |
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Executors.unconfigurableScheduledExecutorService |
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(Executors.newScheduledThreadPool(2)); |
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try { |
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final CountDownLatch done = new CountDownLatch(1); |
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final Runnable task = new CheckedRunnable() { |
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public void realRun() { |
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done.countDown(); |
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}}; |
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Future f = p.schedule(Executors.callable(task, Boolean.TRUE), |
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SHORT_DELAY_MS, MILLISECONDS); |
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assertFalse(f.isDone()); |
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assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS)); |
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assertSame(Boolean.TRUE, f.get()); |
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assertTrue(f.isDone()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Future.get on submitted tasks will time out if they compute too long. |
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*/ |
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public void testTimedCallable() throws Exception { |
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final Runnable sleeper = new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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Thread.sleep(LONG_DELAY_MS); |
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}}; |
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for (ExecutorService executor : |
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new ExecutorService[] { |
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Executors.newSingleThreadExecutor(), |
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Executors.newCachedThreadPool(), |
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Executors.newFixedThreadPool(2), |
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Executors.newScheduledThreadPool(2), |
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}) { |
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try { |
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Future future = executor.submit(sleeper); |
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try { |
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future.get(SHORT_DELAY_MS, MILLISECONDS); |
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shouldThrow(); |
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} catch (TimeoutException success) { |
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} finally { |
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future.cancel(true); |
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} |
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} |
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finally { |
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joinPool(executor); |
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} |
279 |
} |
280 |
} |
281 |
|
282 |
|
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/** |
284 |
* ThreadPoolExecutor using defaultThreadFactory has |
285 |
* specified group, priority, daemon status, and name |
286 |
*/ |
287 |
public void testDefaultThreadFactory() throws Exception { |
288 |
final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
289 |
Runnable r = new CheckedRunnable() { |
290 |
public void realRun() { |
291 |
try { |
292 |
Thread current = Thread.currentThread(); |
293 |
assertTrue(!current.isDaemon()); |
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assertTrue(current.getPriority() <= Thread.NORM_PRIORITY); |
295 |
ThreadGroup g = current.getThreadGroup(); |
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SecurityManager s = System.getSecurityManager(); |
297 |
if (s != null) |
298 |
assertTrue(g == s.getThreadGroup()); |
299 |
else |
300 |
assertTrue(g == egroup); |
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String name = current.getName(); |
302 |
assertTrue(name.endsWith("thread-1")); |
303 |
} catch (SecurityException ok) { |
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// Also pass if not allowed to change setting |
305 |
} |
306 |
}}; |
307 |
ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory()); |
308 |
|
309 |
e.execute(r); |
310 |
try { |
311 |
e.shutdown(); |
312 |
} catch (SecurityException ok) { |
313 |
} |
314 |
|
315 |
try { |
316 |
Thread.sleep(SHORT_DELAY_MS); |
317 |
} finally { |
318 |
joinPool(e); |
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} |
320 |
} |
321 |
|
322 |
/** |
323 |
* ThreadPoolExecutor using privilegedThreadFactory has |
324 |
* specified group, priority, daemon status, name, |
325 |
* access control context and context class loader |
326 |
*/ |
327 |
public void testPrivilegedThreadFactory() throws Exception { |
328 |
Runnable r = new CheckedRunnable() { |
329 |
public void realRun() throws Exception { |
330 |
final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
331 |
final ClassLoader thisccl = Thread.currentThread().getContextClassLoader(); |
332 |
final AccessControlContext thisacc = AccessController.getContext(); |
333 |
Runnable r = new CheckedRunnable() { |
334 |
public void realRun() { |
335 |
Thread current = Thread.currentThread(); |
336 |
assertTrue(!current.isDaemon()); |
337 |
assertTrue(current.getPriority() <= Thread.NORM_PRIORITY); |
338 |
ThreadGroup g = current.getThreadGroup(); |
339 |
SecurityManager s = System.getSecurityManager(); |
340 |
if (s != null) |
341 |
assertTrue(g == s.getThreadGroup()); |
342 |
else |
343 |
assertTrue(g == egroup); |
344 |
String name = current.getName(); |
345 |
assertTrue(name.endsWith("thread-1")); |
346 |
assertSame(thisccl, current.getContextClassLoader()); |
347 |
assertEquals(thisacc, AccessController.getContext()); |
348 |
}}; |
349 |
ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory()); |
350 |
e.execute(r); |
351 |
e.shutdown(); |
352 |
Thread.sleep(SHORT_DELAY_MS); |
353 |
joinPool(e); |
354 |
}}; |
355 |
|
356 |
runWithPermissions(r, |
357 |
new RuntimePermission("getClassLoader"), |
358 |
new RuntimePermission("setContextClassLoader"), |
359 |
new RuntimePermission("modifyThread")); |
360 |
} |
361 |
|
362 |
boolean haveCCLPermissions() { |
363 |
SecurityManager sm = System.getSecurityManager(); |
364 |
if (sm != null) { |
365 |
try { |
366 |
sm.checkPermission(new RuntimePermission("setContextClassLoader")); |
367 |
sm.checkPermission(new RuntimePermission("getClassLoader")); |
368 |
} catch (AccessControlException e) { |
369 |
return false; |
370 |
} |
371 |
} |
372 |
return true; |
373 |
} |
374 |
|
375 |
void checkCCL() { |
376 |
SecurityManager sm = System.getSecurityManager(); |
377 |
if (sm != null) { |
378 |
sm.checkPermission(new RuntimePermission("setContextClassLoader")); |
379 |
sm.checkPermission(new RuntimePermission("getClassLoader")); |
380 |
} |
381 |
} |
382 |
|
383 |
class CheckCCL implements Callable<Object> { |
384 |
public Object call() { |
385 |
checkCCL(); |
386 |
return null; |
387 |
} |
388 |
} |
389 |
|
390 |
|
391 |
/** |
392 |
* Without class loader permissions, creating |
393 |
* privilegedCallableUsingCurrentClassLoader throws ACE |
394 |
*/ |
395 |
public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() { |
396 |
Runnable r = new CheckedRunnable() { |
397 |
public void realRun() throws Exception { |
398 |
if (System.getSecurityManager() == null) |
399 |
return; |
400 |
try { |
401 |
Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable()); |
402 |
shouldThrow(); |
403 |
} catch (AccessControlException success) {} |
404 |
}}; |
405 |
|
406 |
runWithoutPermissions(r); |
407 |
} |
408 |
|
409 |
/** |
410 |
* With class loader permissions, calling |
411 |
* privilegedCallableUsingCurrentClassLoader does not throw ACE |
412 |
*/ |
413 |
public void testprivilegedCallableUsingCCLWithPrivs() throws Exception { |
414 |
Runnable r = new CheckedRunnable() { |
415 |
public void realRun() throws Exception { |
416 |
Executors.privilegedCallableUsingCurrentClassLoader |
417 |
(new NoOpCallable()) |
418 |
.call(); |
419 |
}}; |
420 |
|
421 |
runWithPermissions(r, |
422 |
new RuntimePermission("getClassLoader"), |
423 |
new RuntimePermission("setContextClassLoader")); |
424 |
} |
425 |
|
426 |
/** |
427 |
* Without permissions, calling privilegedCallable throws ACE |
428 |
*/ |
429 |
public void testprivilegedCallableWithNoPrivs() throws Exception { |
430 |
// Avoid classloader-related SecurityExceptions in swingui.TestRunner |
431 |
Executors.privilegedCallable(new CheckCCL()); |
432 |
|
433 |
Runnable r = new CheckedRunnable() { |
434 |
public void realRun() throws Exception { |
435 |
if (System.getSecurityManager() == null) |
436 |
return; |
437 |
Callable task = Executors.privilegedCallable(new CheckCCL()); |
438 |
try { |
439 |
task.call(); |
440 |
shouldThrow(); |
441 |
} catch (AccessControlException success) {} |
442 |
}}; |
443 |
|
444 |
runWithoutPermissions(r); |
445 |
|
446 |
// It seems rather difficult to test that the |
447 |
// AccessControlContext of the privilegedCallable is used |
448 |
// instead of its caller. Below is a failed attempt to do |
449 |
// that, which does not work because the AccessController |
450 |
// cannot capture the internal state of the current Policy. |
451 |
// It would be much more work to differentiate based on, |
452 |
// e.g. CodeSource. |
453 |
|
454 |
// final AccessControlContext[] noprivAcc = new AccessControlContext[1]; |
455 |
// final Callable[] task = new Callable[1]; |
456 |
|
457 |
// runWithPermissions |
458 |
// (new CheckedRunnable() { |
459 |
// public void realRun() { |
460 |
// if (System.getSecurityManager() == null) |
461 |
// return; |
462 |
// noprivAcc[0] = AccessController.getContext(); |
463 |
// task[0] = Executors.privilegedCallable(new CheckCCL()); |
464 |
// try { |
465 |
// AccessController.doPrivileged(new PrivilegedAction<Void>() { |
466 |
// public Void run() { |
467 |
// checkCCL(); |
468 |
// return null; |
469 |
// }}, noprivAcc[0]); |
470 |
// shouldThrow(); |
471 |
// } catch (AccessControlException success) {} |
472 |
// }}); |
473 |
|
474 |
// runWithPermissions |
475 |
// (new CheckedRunnable() { |
476 |
// public void realRun() throws Exception { |
477 |
// if (System.getSecurityManager() == null) |
478 |
// return; |
479 |
// // Verify that we have an underprivileged ACC |
480 |
// try { |
481 |
// AccessController.doPrivileged(new PrivilegedAction<Void>() { |
482 |
// public Void run() { |
483 |
// checkCCL(); |
484 |
// return null; |
485 |
// }}, noprivAcc[0]); |
486 |
// shouldThrow(); |
487 |
// } catch (AccessControlException success) {} |
488 |
|
489 |
// try { |
490 |
// task[0].call(); |
491 |
// shouldThrow(); |
492 |
// } catch (AccessControlException success) {} |
493 |
// }}, |
494 |
// new RuntimePermission("getClassLoader"), |
495 |
// new RuntimePermission("setContextClassLoader")); |
496 |
} |
497 |
|
498 |
/** |
499 |
* With permissions, calling privilegedCallable succeeds |
500 |
*/ |
501 |
public void testprivilegedCallableWithPrivs() throws Exception { |
502 |
Runnable r = new CheckedRunnable() { |
503 |
public void realRun() throws Exception { |
504 |
Executors.privilegedCallable(new CheckCCL()).call(); |
505 |
}}; |
506 |
|
507 |
runWithPermissions(r, |
508 |
new RuntimePermission("getClassLoader"), |
509 |
new RuntimePermission("setContextClassLoader")); |
510 |
} |
511 |
|
512 |
/** |
513 |
* callable(Runnable) returns null when called |
514 |
*/ |
515 |
public void testCallable1() throws Exception { |
516 |
Callable c = Executors.callable(new NoOpRunnable()); |
517 |
assertNull(c.call()); |
518 |
} |
519 |
|
520 |
/** |
521 |
* callable(Runnable, result) returns result when called |
522 |
*/ |
523 |
public void testCallable2() throws Exception { |
524 |
Callable c = Executors.callable(new NoOpRunnable(), one); |
525 |
assertSame(one, c.call()); |
526 |
} |
527 |
|
528 |
/** |
529 |
* callable(PrivilegedAction) returns its result when called |
530 |
*/ |
531 |
public void testCallable3() throws Exception { |
532 |
Callable c = Executors.callable(new PrivilegedAction() { |
533 |
public Object run() { return one; }}); |
534 |
assertSame(one, c.call()); |
535 |
} |
536 |
|
537 |
/** |
538 |
* callable(PrivilegedExceptionAction) returns its result when called |
539 |
*/ |
540 |
public void testCallable4() throws Exception { |
541 |
Callable c = Executors.callable(new PrivilegedExceptionAction() { |
542 |
public Object run() { return one; }}); |
543 |
assertSame(one, c.call()); |
544 |
} |
545 |
|
546 |
|
547 |
/** |
548 |
* callable(null Runnable) throws NPE |
549 |
*/ |
550 |
public void testCallableNPE1() { |
551 |
try { |
552 |
Callable c = Executors.callable((Runnable) null); |
553 |
shouldThrow(); |
554 |
} catch (NullPointerException success) {} |
555 |
} |
556 |
|
557 |
/** |
558 |
* callable(null, result) throws NPE |
559 |
*/ |
560 |
public void testCallableNPE2() { |
561 |
try { |
562 |
Callable c = Executors.callable((Runnable) null, one); |
563 |
shouldThrow(); |
564 |
} catch (NullPointerException success) {} |
565 |
} |
566 |
|
567 |
/** |
568 |
* callable(null PrivilegedAction) throws NPE |
569 |
*/ |
570 |
public void testCallableNPE3() { |
571 |
try { |
572 |
Callable c = Executors.callable((PrivilegedAction) null); |
573 |
shouldThrow(); |
574 |
} catch (NullPointerException success) {} |
575 |
} |
576 |
|
577 |
/** |
578 |
* callable(null PrivilegedExceptionAction) throws NPE |
579 |
*/ |
580 |
public void testCallableNPE4() { |
581 |
try { |
582 |
Callable c = Executors.callable((PrivilegedExceptionAction) null); |
583 |
shouldThrow(); |
584 |
} catch (NullPointerException success) {} |
585 |
} |
586 |
|
587 |
|
588 |
} |