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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/licenses/publicdomain |
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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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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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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.concurrent.AbstractExecutorService; |
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import java.util.concurrent.ArrayBlockingQueue; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.ThreadPoolExecutor; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class AbstractExecutorServiceTest 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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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(AbstractExecutorServiceTest.class); |
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static class DirectExecutorService extends AbstractExecutorService { |
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public void execute(Runnable r) { r.run(); } |
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public void shutdown() { shutdown = true; } |
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public List<Runnable> shutdownNow() { shutdown = true; return Collections.EMPTY_LIST; } |
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public List<Runnable> shutdownNow() { |
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shutdown = true; |
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return Collections.EMPTY_LIST; |
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} |
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public boolean isShutdown() { return shutdown; } |
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public boolean isTerminated() { return isShutdown(); } |
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public boolean awaitTermination(long timeout, TimeUnit unit) { return isShutdown(); } |
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public boolean awaitTermination(long timeout, TimeUnit unit) { |
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return isShutdown(); |
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} |
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private volatile boolean shutdown = false; |
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} |
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*/ |
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public void testExecuteRunnable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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TrackedShortRunnable task = new TrackedShortRunnable(); |
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assertFalse(task.done); |
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Future<?> future = e.submit(task); |
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future.get(); |
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assertTrue(task.done); |
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final AtomicBoolean done = new AtomicBoolean(false); |
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Future<?> future = e.submit(new CheckedRunnable() { |
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public void realRun() { |
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done.set(true); |
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}}); |
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assertNull(future.get()); |
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assertNull(future.get(0, MILLISECONDS)); |
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assertTrue(done.get()); |
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assertTrue(future.isDone()); |
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assertFalse(future.isCancelled()); |
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} |
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/** |
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* Completed submit(callable) returns result |
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*/ |
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assertSame(TEST_STRING, result); |
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} |
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/** |
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* A submitted privileged action runs to completion |
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*/ |
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* execute(null runnable) throws NPE |
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*/ |
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public void testExecuteNullRunnable() { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
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ExecutorService e = new DirectExecutorService(); |
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e.submit((Runnable) 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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* submit(null callable) throws NPE |
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*/ |
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public void testSubmitNullCallable() { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
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ExecutorService e = new DirectExecutorService(); |
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e.submit((Callable) 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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* submit(runnable) throws RejectedExecutionException if |
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* executor is saturated. |
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* submit(callable).get() throws InterruptedException if interrupted |
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*/ |
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public void testExecute1() { |
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ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(1)); |
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try { |
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for (int i = 0; i < 2; ++i) |
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p.submit(new MediumRunnable()); |
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for (int i = 0; i < 2; ++i) { |
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try { |
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p.submit(new MediumRunnable()); |
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shouldThrow(); |
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} catch (RejectedExecutionException success) {} |
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} |
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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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* submit(callable) throws RejectedExecutionException |
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* if executor is saturated. |
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*/ |
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public void testExecute2() { |
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ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(1)); |
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public void testInterruptedSubmit() throws InterruptedException { |
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final CountDownLatch submitted = new CountDownLatch(1); |
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final CountDownLatch quittingTime = new CountDownLatch(1); |
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final ExecutorService p |
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= new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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final Callable<Void> awaiter = new CheckedCallable<Void>() { |
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public Void realCall() throws InterruptedException { |
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quittingTime.await(); |
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return null; |
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}}; |
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try { |
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for (int i = 0; i < 2; ++i) |
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p.submit(new MediumRunnable()); |
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for (int i = 0; i < 2; ++i) { |
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try { |
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p.submit(new SmallCallable()); |
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shouldThrow(); |
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} catch (RejectedExecutionException success) {} |
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} |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws Exception { |
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Future<Void> future = p.submit(awaiter); |
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submitted.countDown(); |
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future.get(); |
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}}); |
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t.start(); |
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submitted.await(); |
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t.interrupt(); |
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t.join(); |
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} finally { |
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quittingTime.countDown(); |
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joinPool(p); |
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} |
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} |
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/** |
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* Blocking on submit(callable) throws InterruptedException if |
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* caller interrupted. |
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*/ |
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public void testInterruptedSubmit() throws InterruptedException { |
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final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(10)); |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws Exception { |
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p.submit(new CheckedCallable<Object>() { |
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public Object realCall() |
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throws InterruptedException { |
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Thread.sleep(SMALL_DELAY_MS); |
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return null; |
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}}).get(); |
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}}); |
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|
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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joinPool(p); |
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} |
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|
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/** |
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* get of submitted callable throws InterruptedException if callable |
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* interrupted |
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*/ |
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public void testSubmitIE() throws InterruptedException { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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|
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws Exception { |
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p.submit(new SmallCallable()).get(); |
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}}); |
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|
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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joinPool(p); |
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} |
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|
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/** |
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* get of submit(callable) throws ExecutionException if callable |
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* throws exception |
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* get of submit(callable) throws ExecutionException if callable |
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* throws exception |
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*/ |
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public void testSubmitEE() throws InterruptedException { |
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ThreadPoolExecutor p = |
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new ArrayBlockingQueue<Runnable>(10)); |
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Callable c = new Callable() { |
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public Object call() { return 5/0; }}; |
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public Object call() { throw new ArithmeticException(); }}; |
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try { |
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p.submit(c).get(); |
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/** |
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* invokeAny(null) throws NPE |
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*/ |
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public void testInvokeAny1() |
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throws InterruptedException, ExecutionException { |
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public void testInvokeAny1() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
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e.invokeAny(null); |
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/** |
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* invokeAny(empty collection) throws IAE |
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*/ |
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public void testInvokeAny2() |
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throws InterruptedException, ExecutionException { |
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public void testInvokeAny2() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
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e.invokeAny(new ArrayList<Callable<String>>()); |
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*/ |
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public void testInvokeAny3() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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List<Callable<Integer>> l = new ArrayList<Callable<Integer>>(); |
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l.add(new Callable<Integer>() { |
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public Integer call() { return 5/0; }}); |
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List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
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l.add(new Callable<Long>() { |
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public Long call() { throw new ArithmeticException(); }}); |
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l.add(null); |
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try { |
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e.invokeAny(l); |
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} |
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} |
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|
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/** |
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* timed invokeAny(null) throws NPE |
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*/ |
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*/ |
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public void testTimedInvokeAny3() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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List<Callable<Integer>> l = new ArrayList<Callable<Integer>>(); |
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l.add(new Callable<Integer>() { |
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public Integer call() { return 5/0; }}); |
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List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
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l.add(new Callable<Long>() { |
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public Long call() { throw new ArithmeticException(); }}); |
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l.add(null); |
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try { |
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e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
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l.add(new StringTask()); |
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l.add(new StringTask()); |
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List<Future<String>> futures = |
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e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
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e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
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assertEquals(2, futures.size()); |
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for (Future<String> future : futures) |
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assertSame(TEST_STRING, future.get()); |
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/** |
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* timed invokeAll cancels tasks not completed by timeout |
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*/ |
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public void testTimedInvokeAll6() throws InterruptedException { |
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public void testTimedInvokeAll6() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
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List<Callable<String>> l = new ArrayList<Callable<String>>(); |
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l.add(new StringTask()); |
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l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING)); |
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l.add(new StringTask()); |
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List<Future<String>> futures = |
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e.invokeAll(l, SMALL_DELAY_MS, MILLISECONDS); |
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assertEquals(3, futures.size()); |
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Iterator<Future<String>> it = futures.iterator(); |
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Future<String> f1 = it.next(); |
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Future<String> f2 = it.next(); |
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Future<String> f3 = it.next(); |
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assertTrue(f1.isDone()); |
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assertFalse(f1.isCancelled()); |
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assertTrue(f2.isDone()); |
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assertTrue(f3.isDone()); |
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assertTrue(f3.isCancelled()); |
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for (long timeout = timeoutMillis();;) { |
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List<Callable<String>> tasks = new ArrayList<>(); |
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tasks.add(new StringTask("0")); |
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tasks.add(Executors.callable(possiblyInterruptedRunnable(timeout), |
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TEST_STRING)); |
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tasks.add(new StringTask("2")); |
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long startTime = System.nanoTime(); |
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List<Future<String>> futures = |
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e.invokeAll(tasks, timeout, MILLISECONDS); |
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assertEquals(tasks.size(), futures.size()); |
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assertTrue(millisElapsedSince(startTime) >= timeout); |
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for (Future future : futures) |
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assertTrue(future.isDone()); |
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try { |
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assertEquals("0", futures.get(0).get()); |
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assertEquals(TEST_STRING, futures.get(1).get()); |
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} catch (CancellationException retryWithLongerTimeout) { |
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// unusual delay before starting second task |
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timeout *= 2; |
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if (timeout >= LONG_DELAY_MS / 2) |
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fail("expected exactly one task to be cancelled"); |
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continue; |
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} |
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assertTrue(futures.get(2).isCancelled()); |
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break; |
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} |
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} finally { |
633 |
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joinPool(e); |
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} |