1 |
/* |
2 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
* Expert Group and released to the public domain, as explained at |
4 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
* Pat Fisher, Mike Judd. |
7 |
*/ |
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|
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
|
11 |
import java.security.PrivilegedAction; |
12 |
import java.security.PrivilegedExceptionAction; |
13 |
import java.util.ArrayList; |
14 |
import java.util.Collections; |
15 |
import java.util.List; |
16 |
import java.util.concurrent.AbstractExecutorService; |
17 |
import java.util.concurrent.ArrayBlockingQueue; |
18 |
import java.util.concurrent.Callable; |
19 |
import java.util.concurrent.CancellationException; |
20 |
import java.util.concurrent.CountDownLatch; |
21 |
import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
24 |
import java.util.concurrent.Future; |
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import java.util.concurrent.ThreadPoolExecutor; |
26 |
import java.util.concurrent.TimeUnit; |
27 |
import java.util.concurrent.atomic.AtomicBoolean; |
28 |
|
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import junit.framework.Test; |
30 |
import junit.framework.TestSuite; |
31 |
|
32 |
public class AbstractExecutorServiceTest extends JSR166TestCase { |
33 |
public static void main(String[] args) { |
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main(suite(), args); |
35 |
} |
36 |
public static Test suite() { |
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return new TestSuite(AbstractExecutorServiceTest.class); |
38 |
} |
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|
40 |
/** |
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* A no-frills implementation of AbstractExecutorService, designed |
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* to test the submit methods only. |
43 |
*/ |
44 |
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() { |
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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) { |
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return isShutdown(); |
55 |
} |
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private volatile boolean shutdown = false; |
57 |
} |
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|
59 |
/** |
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* execute(runnable) runs it to completion |
61 |
*/ |
62 |
public void testExecuteRunnable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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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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/** |
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* Completed submit(callable) returns result |
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*/ |
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public void testSubmitCallable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<String> future = e.submit(new StringTask()); |
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String result = future.get(); |
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assertSame(TEST_STRING, result); |
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} |
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|
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/** |
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* Completed submit(runnable) returns successfully |
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*/ |
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public void testSubmitRunnable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<?> future = e.submit(new NoOpRunnable()); |
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future.get(); |
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assertTrue(future.isDone()); |
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} |
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|
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/** |
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* Completed submit(runnable, result) returns result |
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*/ |
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public void testSubmitRunnable2() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
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String result = future.get(); |
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assertSame(TEST_STRING, result); |
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} |
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|
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/** |
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* A submitted privileged action runs to completion |
108 |
*/ |
109 |
public void testSubmitPrivilegedAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedAction() { |
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public Object run() { |
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return TEST_STRING; |
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}})); |
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|
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assertSame(TEST_STRING, future.get()); |
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}}; |
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|
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runWithPermissions(r, |
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new RuntimePermission("getClassLoader"), |
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new RuntimePermission("setContextClassLoader"), |
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new RuntimePermission("modifyThread")); |
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} |
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|
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/** |
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* A submitted privileged exception action runs to completion |
129 |
*/ |
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public void testSubmitPrivilegedExceptionAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
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public Object run() { |
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return TEST_STRING; |
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}})); |
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|
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assertSame(TEST_STRING, future.get()); |
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}}; |
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|
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runWithPermissions(r); |
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} |
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|
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/** |
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* A submitted failed privileged exception action reports exception |
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*/ |
148 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
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public Object run() throws Exception { |
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throw new IndexOutOfBoundsException(); |
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}})); |
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|
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try { |
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future.get(); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
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}}}; |
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|
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runWithPermissions(r); |
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} |
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|
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/** |
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* execute(null runnable) throws NPE |
169 |
*/ |
170 |
public void testExecuteNullRunnable() { |
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ExecutorService e = new DirectExecutorService(); |
172 |
try { |
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e.submit((Runnable) null); |
174 |
shouldThrow(); |
175 |
} catch (NullPointerException success) {} |
176 |
} |
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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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e.submit((Callable) null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
187 |
} |
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|
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/** |
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* submit(callable).get() throws InterruptedException if interrupted |
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*/ |
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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 Callable<Void> awaiter = new CheckedCallable<Void>() { |
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public Void realCall() throws InterruptedException { |
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assertTrue(quittingTime.await(2*LONG_DELAY_MS, MILLISECONDS)); |
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return null; |
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}}; |
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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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try (PoolCleaner cleaner = cleaner(p, quittingTime)) { |
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Thread t = newStartedThread(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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|
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await(submitted); |
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t.interrupt(); |
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awaitTermination(t); |
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} |
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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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*/ |
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public void testSubmitEE() 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)); |
226 |
try (PoolCleaner cleaner = cleaner(p)) { |
227 |
Callable c = new Callable() { |
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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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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertTrue(success.getCause() instanceof ArithmeticException); |
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} |
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} |
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} |
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|
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/** |
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* invokeAny(null) throws NPE |
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*/ |
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public void testInvokeAny1() throws Exception { |
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final ExecutorService e = new DirectExecutorService(); |
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try (PoolCleaner cleaner = cleaner(e)) { |
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try { |
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e.invokeAny(null); |
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shouldThrow(); |
247 |
} catch (NullPointerException success) {} |
248 |
} |
249 |
} |
250 |
|
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/** |
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* invokeAny(empty collection) throws IAE |
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*/ |
254 |
public void testInvokeAny2() throws Exception { |
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final ExecutorService e = new DirectExecutorService(); |
256 |
try (PoolCleaner cleaner = cleaner(e)) { |
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try { |
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e.invokeAny(new ArrayList<Callable<String>>()); |
259 |
shouldThrow(); |
260 |
} catch (IllegalArgumentException success) {} |
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} |
262 |
} |
263 |
|
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/** |
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* invokeAny(c) throws NPE if c has null elements |
266 |
*/ |
267 |
public void testInvokeAny3() throws Exception { |
268 |
final ExecutorService e = new DirectExecutorService(); |
269 |
try (PoolCleaner cleaner = cleaner(e)) { |
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List<Callable<Long>> l = new ArrayList<>(); |
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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); |
274 |
try { |
275 |
e.invokeAny(l); |
276 |
shouldThrow(); |
277 |
} catch (NullPointerException success) {} |
278 |
} |
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} |
280 |
|
281 |
/** |
282 |
* invokeAny(c) throws ExecutionException if no task in c completes |
283 |
*/ |
284 |
public void testInvokeAny4() throws InterruptedException { |
285 |
final ExecutorService e = new DirectExecutorService(); |
286 |
try (PoolCleaner cleaner = cleaner(e)) { |
287 |
List<Callable<String>> l = new ArrayList<>(); |
288 |
l.add(new NPETask()); |
289 |
try { |
290 |
e.invokeAny(l); |
291 |
shouldThrow(); |
292 |
} catch (ExecutionException success) { |
293 |
assertTrue(success.getCause() instanceof NullPointerException); |
294 |
} |
295 |
} |
296 |
} |
297 |
|
298 |
/** |
299 |
* invokeAny(c) returns result of some task in c if at least one completes |
300 |
*/ |
301 |
public void testInvokeAny5() throws Exception { |
302 |
final ExecutorService e = new DirectExecutorService(); |
303 |
try (PoolCleaner cleaner = cleaner(e)) { |
304 |
List<Callable<String>> l = new ArrayList<>(); |
305 |
l.add(new StringTask()); |
306 |
l.add(new StringTask()); |
307 |
String result = e.invokeAny(l); |
308 |
assertSame(TEST_STRING, result); |
309 |
} |
310 |
} |
311 |
|
312 |
/** |
313 |
* invokeAll(null) throws NPE |
314 |
*/ |
315 |
public void testInvokeAll1() throws InterruptedException { |
316 |
final ExecutorService e = new DirectExecutorService(); |
317 |
try (PoolCleaner cleaner = cleaner(e)) { |
318 |
try { |
319 |
e.invokeAll(null); |
320 |
shouldThrow(); |
321 |
} catch (NullPointerException success) {} |
322 |
} |
323 |
} |
324 |
|
325 |
/** |
326 |
* invokeAll(empty collection) returns empty collection |
327 |
*/ |
328 |
public void testInvokeAll2() throws InterruptedException { |
329 |
final ExecutorService e = new DirectExecutorService(); |
330 |
try (PoolCleaner cleaner = cleaner(e)) { |
331 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
332 |
assertTrue(r.isEmpty()); |
333 |
} |
334 |
} |
335 |
|
336 |
/** |
337 |
* invokeAll(c) throws NPE if c has null elements |
338 |
*/ |
339 |
public void testInvokeAll3() throws InterruptedException { |
340 |
final ExecutorService e = new DirectExecutorService(); |
341 |
try (PoolCleaner cleaner = cleaner(e)) { |
342 |
List<Callable<String>> l = new ArrayList<>(); |
343 |
l.add(new StringTask()); |
344 |
l.add(null); |
345 |
try { |
346 |
e.invokeAll(l); |
347 |
shouldThrow(); |
348 |
} catch (NullPointerException success) {} |
349 |
} |
350 |
} |
351 |
|
352 |
/** |
353 |
* get of returned element of invokeAll(c) throws exception on failed task |
354 |
*/ |
355 |
public void testInvokeAll4() throws Exception { |
356 |
final ExecutorService e = new DirectExecutorService(); |
357 |
try (PoolCleaner cleaner = cleaner(e)) { |
358 |
List<Callable<String>> l = new ArrayList<>(); |
359 |
l.add(new NPETask()); |
360 |
List<Future<String>> futures = e.invokeAll(l); |
361 |
assertEquals(1, futures.size()); |
362 |
try { |
363 |
futures.get(0).get(); |
364 |
shouldThrow(); |
365 |
} catch (ExecutionException success) { |
366 |
assertTrue(success.getCause() instanceof NullPointerException); |
367 |
} |
368 |
} |
369 |
} |
370 |
|
371 |
/** |
372 |
* invokeAll(c) returns results of all completed tasks in c |
373 |
*/ |
374 |
public void testInvokeAll5() throws Exception { |
375 |
final ExecutorService e = new DirectExecutorService(); |
376 |
try (PoolCleaner cleaner = cleaner(e)) { |
377 |
List<Callable<String>> l = new ArrayList<>(); |
378 |
l.add(new StringTask()); |
379 |
l.add(new StringTask()); |
380 |
List<Future<String>> futures = e.invokeAll(l); |
381 |
assertEquals(2, futures.size()); |
382 |
for (Future<String> future : futures) |
383 |
assertSame(TEST_STRING, future.get()); |
384 |
} |
385 |
} |
386 |
|
387 |
/** |
388 |
* timed invokeAny(null) throws NPE |
389 |
*/ |
390 |
public void testTimedInvokeAny1() throws Exception { |
391 |
final ExecutorService e = new DirectExecutorService(); |
392 |
try (PoolCleaner cleaner = cleaner(e)) { |
393 |
try { |
394 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
395 |
shouldThrow(); |
396 |
} catch (NullPointerException success) {} |
397 |
} |
398 |
} |
399 |
|
400 |
/** |
401 |
* timed invokeAny(null time unit) throws NPE |
402 |
*/ |
403 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
404 |
final ExecutorService e = new DirectExecutorService(); |
405 |
try (PoolCleaner cleaner = cleaner(e)) { |
406 |
List<Callable<String>> l = new ArrayList<>(); |
407 |
l.add(new StringTask()); |
408 |
try { |
409 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
410 |
shouldThrow(); |
411 |
} catch (NullPointerException success) {} |
412 |
} |
413 |
} |
414 |
|
415 |
/** |
416 |
* timed invokeAny(empty collection) throws IAE |
417 |
*/ |
418 |
public void testTimedInvokeAny2() throws Exception { |
419 |
final ExecutorService e = new DirectExecutorService(); |
420 |
try (PoolCleaner cleaner = cleaner(e)) { |
421 |
try { |
422 |
e.invokeAny(new ArrayList<Callable<String>>(), |
423 |
MEDIUM_DELAY_MS, MILLISECONDS); |
424 |
shouldThrow(); |
425 |
} catch (IllegalArgumentException success) {} |
426 |
} |
427 |
} |
428 |
|
429 |
/** |
430 |
* timed invokeAny(c) throws NPE if c has null elements |
431 |
*/ |
432 |
public void testTimedInvokeAny3() throws Exception { |
433 |
final ExecutorService e = new DirectExecutorService(); |
434 |
try (PoolCleaner cleaner = cleaner(e)) { |
435 |
List<Callable<Long>> l = new ArrayList<>(); |
436 |
l.add(new Callable<Long>() { |
437 |
public Long call() { throw new ArithmeticException(); }}); |
438 |
l.add(null); |
439 |
try { |
440 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
441 |
shouldThrow(); |
442 |
} catch (NullPointerException success) {} |
443 |
} |
444 |
} |
445 |
|
446 |
/** |
447 |
* timed invokeAny(c) throws ExecutionException if no task completes |
448 |
*/ |
449 |
public void testTimedInvokeAny4() throws Exception { |
450 |
final ExecutorService e = new DirectExecutorService(); |
451 |
try (PoolCleaner cleaner = cleaner(e)) { |
452 |
long startTime = System.nanoTime(); |
453 |
List<Callable<String>> l = new ArrayList<>(); |
454 |
l.add(new NPETask()); |
455 |
try { |
456 |
e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
457 |
shouldThrow(); |
458 |
} catch (ExecutionException success) { |
459 |
assertTrue(success.getCause() instanceof NullPointerException); |
460 |
} |
461 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
462 |
} |
463 |
} |
464 |
|
465 |
/** |
466 |
* timed invokeAny(c) returns result of some task in c |
467 |
*/ |
468 |
public void testTimedInvokeAny5() throws Exception { |
469 |
final ExecutorService e = new DirectExecutorService(); |
470 |
try (PoolCleaner cleaner = cleaner(e)) { |
471 |
long startTime = System.nanoTime(); |
472 |
List<Callable<String>> l = new ArrayList<>(); |
473 |
l.add(new StringTask()); |
474 |
l.add(new StringTask()); |
475 |
String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
476 |
assertSame(TEST_STRING, result); |
477 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
478 |
} |
479 |
} |
480 |
|
481 |
/** |
482 |
* timed invokeAll(null) throws NPE |
483 |
*/ |
484 |
public void testTimedInvokeAll1() throws InterruptedException { |
485 |
final ExecutorService e = new DirectExecutorService(); |
486 |
try (PoolCleaner cleaner = cleaner(e)) { |
487 |
try { |
488 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
489 |
shouldThrow(); |
490 |
} catch (NullPointerException success) {} |
491 |
} |
492 |
} |
493 |
|
494 |
/** |
495 |
* timed invokeAll(null time unit) throws NPE |
496 |
*/ |
497 |
public void testTimedInvokeAllNullTimeUnit() throws InterruptedException { |
498 |
final ExecutorService e = new DirectExecutorService(); |
499 |
try (PoolCleaner cleaner = cleaner(e)) { |
500 |
List<Callable<String>> l = new ArrayList<>(); |
501 |
l.add(new StringTask()); |
502 |
try { |
503 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
504 |
shouldThrow(); |
505 |
} catch (NullPointerException success) {} |
506 |
} |
507 |
} |
508 |
|
509 |
/** |
510 |
* timed invokeAll(empty collection) returns empty collection |
511 |
*/ |
512 |
public void testTimedInvokeAll2() throws InterruptedException { |
513 |
final ExecutorService e = new DirectExecutorService(); |
514 |
try (PoolCleaner cleaner = cleaner(e)) { |
515 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
516 |
assertTrue(r.isEmpty()); |
517 |
} |
518 |
} |
519 |
|
520 |
/** |
521 |
* timed invokeAll(c) throws NPE if c has null elements |
522 |
*/ |
523 |
public void testTimedInvokeAll3() throws InterruptedException { |
524 |
final ExecutorService e = new DirectExecutorService(); |
525 |
try (PoolCleaner cleaner = cleaner(e)) { |
526 |
List<Callable<String>> l = new ArrayList<>(); |
527 |
l.add(new StringTask()); |
528 |
l.add(null); |
529 |
try { |
530 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
531 |
shouldThrow(); |
532 |
} catch (NullPointerException success) {} |
533 |
} |
534 |
} |
535 |
|
536 |
/** |
537 |
* get of returned element of invokeAll(c) throws exception on failed task |
538 |
*/ |
539 |
public void testTimedInvokeAll4() throws Exception { |
540 |
final ExecutorService e = new DirectExecutorService(); |
541 |
try (PoolCleaner cleaner = cleaner(e)) { |
542 |
List<Callable<String>> l = new ArrayList<>(); |
543 |
l.add(new NPETask()); |
544 |
List<Future<String>> futures = |
545 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
546 |
assertEquals(1, futures.size()); |
547 |
try { |
548 |
futures.get(0).get(); |
549 |
shouldThrow(); |
550 |
} catch (ExecutionException success) { |
551 |
assertTrue(success.getCause() instanceof NullPointerException); |
552 |
} |
553 |
} |
554 |
} |
555 |
|
556 |
/** |
557 |
* timed invokeAll(c) returns results of all completed tasks in c |
558 |
*/ |
559 |
public void testTimedInvokeAll5() throws Exception { |
560 |
final ExecutorService e = new DirectExecutorService(); |
561 |
try (PoolCleaner cleaner = cleaner(e)) { |
562 |
List<Callable<String>> l = new ArrayList<>(); |
563 |
l.add(new StringTask()); |
564 |
l.add(new StringTask()); |
565 |
List<Future<String>> futures = |
566 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
567 |
assertEquals(2, futures.size()); |
568 |
for (Future<String> future : futures) |
569 |
assertSame(TEST_STRING, future.get()); |
570 |
} |
571 |
} |
572 |
|
573 |
/** |
574 |
* timed invokeAll cancels tasks not completed by timeout |
575 |
*/ |
576 |
public void testTimedInvokeAll6() throws Exception { |
577 |
final ExecutorService e = new DirectExecutorService(); |
578 |
try (PoolCleaner cleaner = cleaner(e)) { |
579 |
for (long timeout = timeoutMillis();;) { |
580 |
List<Callable<String>> tasks = new ArrayList<>(); |
581 |
tasks.add(new StringTask("0")); |
582 |
tasks.add(Executors.callable(possiblyInterruptedRunnable(timeout), |
583 |
TEST_STRING)); |
584 |
tasks.add(new StringTask("2")); |
585 |
long startTime = System.nanoTime(); |
586 |
List<Future<String>> futures = |
587 |
e.invokeAll(tasks, timeout, MILLISECONDS); |
588 |
assertEquals(tasks.size(), futures.size()); |
589 |
assertTrue(millisElapsedSince(startTime) >= timeout); |
590 |
for (Future future : futures) |
591 |
assertTrue(future.isDone()); |
592 |
try { |
593 |
assertEquals("0", futures.get(0).get()); |
594 |
assertEquals(TEST_STRING, futures.get(1).get()); |
595 |
} catch (CancellationException retryWithLongerTimeout) { |
596 |
// unusual delay before starting second task |
597 |
timeout *= 2; |
598 |
if (timeout >= LONG_DELAY_MS / 2) |
599 |
fail("expected exactly one task to be cancelled"); |
600 |
continue; |
601 |
} |
602 |
assertTrue(futures.get(2).isCancelled()); |
603 |
break; |
604 |
} |
605 |
} |
606 |
} |
607 |
|
608 |
} |