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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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*/ |
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|
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import junit.framework.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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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.Collection; |
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import java.util.List; |
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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.AbstractExecutorService; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.Future; |
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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.CancellationException; |
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import java.util.concurrent.RejectedExecutionException; |
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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.ForkJoinPool; |
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import java.util.concurrent.ForkJoinTask; |
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import java.util.concurrent.ForkJoinWorkerThread; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.locks.ReentrantLock; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.security.AccessControlException; |
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import java.security.Policy; |
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< |
import java.security.PrivilegedAction; |
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< |
import java.security.PrivilegedExceptionAction; |
28 |
> |
|
29 |
> |
import junit.framework.AssertionFailedError; |
30 |
> |
import junit.framework.Test; |
31 |
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import junit.framework.TestSuite; |
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|
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public class ForkJoinPoolTest 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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|
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public static Test suite() { |
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return new TestSuite(ForkJoinPoolTest.class); |
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} |
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|
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/** |
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/* |
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* Testing coverage notes: |
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* |
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* 1. shutdown and related methods are tested via super.joinPool. |
107 |
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static final class FibTask extends RecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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public Integer compute() { |
110 |
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protected Integer compute() { |
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int n = number; |
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if (n <= 1) |
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return n; |
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this.locker = locker; |
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this.lock = lock; |
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} |
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public Integer compute() { |
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protected Integer compute() { |
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int n; |
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LockingFibTask f1 = null; |
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LockingFibTask f2 = null; |
165 |
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try { |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
167 |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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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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* getParallelism returns size set in constructor |
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*/ |
226 |
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} |
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|
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/** |
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* awaitTermination on a non-shutdown pool times out |
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*/ |
231 |
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public void testAwaitTermination_timesOut() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(1); |
233 |
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assertFalse(p.isTerminated()); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS)); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS)); |
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assertFalse(p.awaitTermination(-1L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(-1L, MILLISECONDS)); |
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assertFalse(p.awaitTermination(0L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(0L, MILLISECONDS)); |
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long timeoutNanos = 999999L; |
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long startTime = System.nanoTime(); |
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assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS)); |
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assertTrue(System.nanoTime() - startTime >= timeoutNanos); |
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assertFalse(p.isTerminated()); |
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startTime = System.nanoTime(); |
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long timeoutMillis = timeoutMillis(); |
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assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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assertFalse(p.isTerminated()); |
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p.shutdown(); |
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assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(p.isTerminated()); |
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} |
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|
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/** |
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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
272 |
< |
p.execute(new FibTask(8)); |
273 |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
272 |
> |
try { |
273 |
> |
p.execute(new FibTask(8)); |
274 |
> |
assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
275 |
> |
} catch (RejectedExecutionException ok) { |
276 |
> |
} |
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} finally { |
278 |
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p.shutdownNow(); // failure might have prevented processing task |
279 |
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joinPool(p); |
281 |
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} |
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|
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/** |
284 |
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* After invoking a single task, isQuiescent is true, |
285 |
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* queues are empty, threads are not active, and |
286 |
< |
* construction parameters continue to hold |
284 |
> |
* After invoking a single task, isQuiescent eventually becomes |
285 |
> |
* true, at which time queues are empty, threads are not active, |
286 |
> |
* the task has completed successfully, and construction |
287 |
> |
* parameters continue to hold |
288 |
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*/ |
289 |
< |
public void testisQuiescent() throws InterruptedException { |
289 |
> |
public void testIsQuiescent() throws Exception { |
290 |
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ForkJoinPool p = new ForkJoinPool(2); |
291 |
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try { |
292 |
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assertTrue(p.isQuiescent()); |
293 |
< |
p.invoke(new FibTask(20)); |
293 |
> |
long startTime = System.nanoTime(); |
294 |
> |
FibTask f = new FibTask(20); |
295 |
> |
p.invoke(f); |
296 |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
297 |
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p.getFactory()); |
298 |
< |
Thread.sleep(SMALL_DELAY_MS); |
298 |
> |
while (! p.isQuiescent()) { |
299 |
> |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
300 |
> |
throw new AssertionFailedError("timed out"); |
301 |
> |
assertFalse(p.getAsyncMode()); |
302 |
> |
assertFalse(p.isShutdown()); |
303 |
> |
assertFalse(p.isTerminating()); |
304 |
> |
assertFalse(p.isTerminated()); |
305 |
> |
Thread.yield(); |
306 |
> |
} |
307 |
> |
|
308 |
|
assertTrue(p.isQuiescent()); |
309 |
|
assertFalse(p.getAsyncMode()); |
310 |
|
assertEquals(0, p.getActiveThreadCount()); |
314 |
|
assertFalse(p.isShutdown()); |
315 |
|
assertFalse(p.isTerminating()); |
316 |
|
assertFalse(p.isTerminated()); |
317 |
+ |
assertTrue(f.isDone()); |
318 |
+ |
assertEquals(6765, (int) f.get()); |
319 |
|
} finally { |
320 |
|
joinPool(p); |
321 |
|
} |
371 |
|
* pollSubmission returns unexecuted submitted task, if present |
372 |
|
*/ |
373 |
|
public void testPollSubmission() { |
374 |
+ |
final CountDownLatch done = new CountDownLatch(1); |
375 |
|
SubFJP p = new SubFJP(); |
376 |
|
try { |
377 |
< |
ForkJoinTask a = p.submit(new ShortRunnable()); |
378 |
< |
ForkJoinTask b = p.submit(new ShortRunnable()); |
379 |
< |
ForkJoinTask c = p.submit(new ShortRunnable()); |
377 |
> |
ForkJoinTask a = p.submit(awaiter(done)); |
378 |
> |
ForkJoinTask b = p.submit(awaiter(done)); |
379 |
> |
ForkJoinTask c = p.submit(awaiter(done)); |
380 |
|
ForkJoinTask r = p.pollSubmission(); |
381 |
|
assertTrue(r == a || r == b || r == c); |
382 |
|
assertFalse(r.isDone()); |
383 |
|
} finally { |
384 |
+ |
done.countDown(); |
385 |
|
joinPool(p); |
386 |
|
} |
387 |
|
} |
390 |
|
* drainTasksTo transfers unexecuted submitted tasks, if present |
391 |
|
*/ |
392 |
|
public void testDrainTasksTo() { |
393 |
+ |
final CountDownLatch done = new CountDownLatch(1); |
394 |
|
SubFJP p = new SubFJP(); |
395 |
|
try { |
396 |
< |
ForkJoinTask a = p.submit(new ShortRunnable()); |
397 |
< |
ForkJoinTask b = p.submit(new ShortRunnable()); |
398 |
< |
ForkJoinTask c = p.submit(new ShortRunnable()); |
396 |
> |
ForkJoinTask a = p.submit(awaiter(done)); |
397 |
> |
ForkJoinTask b = p.submit(awaiter(done)); |
398 |
> |
ForkJoinTask c = p.submit(awaiter(done)); |
399 |
|
ArrayList<ForkJoinTask> al = new ArrayList(); |
400 |
|
p.drainTasksTo(al); |
401 |
|
assertTrue(al.size() > 0); |
404 |
|
assertFalse(r.isDone()); |
405 |
|
} |
406 |
|
} finally { |
407 |
+ |
done.countDown(); |
408 |
|
joinPool(p); |
409 |
|
} |
410 |
|
} |
411 |
|
|
365 |
– |
|
412 |
|
// FJ Versions of AbstractExecutorService tests |
413 |
|
|
414 |
|
/** |
417 |
|
public void testExecuteRunnable() throws Throwable { |
418 |
|
ExecutorService e = new ForkJoinPool(1); |
419 |
|
try { |
420 |
< |
TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS); |
421 |
< |
assertFalse(task.isDone()); |
422 |
< |
Future<?> future = e.submit(task); |
420 |
> |
final AtomicBoolean done = new AtomicBoolean(false); |
421 |
> |
Future<?> future = e.submit(new CheckedRunnable() { |
422 |
> |
public void realRun() { |
423 |
> |
done.set(true); |
424 |
> |
}}); |
425 |
|
assertNull(future.get()); |
426 |
< |
assertTrue(task.isDone()); |
426 |
> |
assertNull(future.get(0, MILLISECONDS)); |
427 |
> |
assertTrue(done.get()); |
428 |
> |
assertTrue(future.isDone()); |
429 |
|
assertFalse(future.isCancelled()); |
430 |
|
} finally { |
431 |
|
joinPool(e); |
432 |
|
} |
433 |
|
} |
434 |
|
|
385 |
– |
|
435 |
|
/** |
436 |
|
* Completed submit(callable) returns result |
437 |
|
*/ |
477 |
|
} |
478 |
|
} |
479 |
|
|
431 |
– |
|
480 |
|
/** |
481 |
|
* A submitted privileged action runs to completion |
482 |
|
*/ |
483 |
< |
public void testSubmitPrivilegedAction() throws Throwable { |
484 |
< |
Policy savedPolicy = null; |
485 |
< |
try { |
486 |
< |
savedPolicy = Policy.getPolicy(); |
487 |
< |
AdjustablePolicy policy = new AdjustablePolicy(); |
440 |
< |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
441 |
< |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
442 |
< |
Policy.setPolicy(policy); |
443 |
< |
} catch (AccessControlException ok) { |
444 |
< |
return; |
445 |
< |
} |
446 |
< |
|
447 |
< |
try { |
483 |
> |
public void testSubmitPrivilegedAction() throws Exception { |
484 |
> |
final Callable callable = Executors.callable(new PrivilegedAction() { |
485 |
> |
public Object run() { return TEST_STRING; }}); |
486 |
> |
Runnable r = new CheckedRunnable() { |
487 |
> |
public void realRun() throws Exception { |
488 |
|
ExecutorService e = new ForkJoinPool(1); |
489 |
|
try { |
490 |
< |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
491 |
< |
public Object run() { |
452 |
< |
return TEST_STRING; |
453 |
< |
}})); |
454 |
< |
|
455 |
< |
Object result = future.get(); |
456 |
< |
assertSame(TEST_STRING, result); |
490 |
> |
Future future = e.submit(callable); |
491 |
> |
assertSame(TEST_STRING, future.get()); |
492 |
|
} finally { |
493 |
|
joinPool(e); |
494 |
|
} |
495 |
< |
} finally { |
496 |
< |
Policy.setPolicy(savedPolicy); |
497 |
< |
} |
495 |
> |
}}; |
496 |
> |
|
497 |
> |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
498 |
|
} |
499 |
|
|
500 |
|
/** |
501 |
|
* A submitted privileged exception action runs to completion |
502 |
|
*/ |
503 |
< |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
504 |
< |
Policy savedPolicy = null; |
505 |
< |
try { |
506 |
< |
savedPolicy = Policy.getPolicy(); |
507 |
< |
AdjustablePolicy policy = new AdjustablePolicy(); |
508 |
< |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
474 |
< |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
475 |
< |
Policy.setPolicy(policy); |
476 |
< |
} catch (AccessControlException ok) { |
477 |
< |
return; |
478 |
< |
} |
479 |
< |
|
480 |
< |
try { |
503 |
> |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
504 |
> |
final Callable callable = |
505 |
> |
Executors.callable(new PrivilegedExceptionAction() { |
506 |
> |
public Object run() { return TEST_STRING; }}); |
507 |
> |
Runnable r = new CheckedRunnable() { |
508 |
> |
public void realRun() throws Exception { |
509 |
|
ExecutorService e = new ForkJoinPool(1); |
510 |
|
try { |
511 |
< |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
512 |
< |
public Object run() { |
485 |
< |
return TEST_STRING; |
486 |
< |
}})); |
487 |
< |
|
488 |
< |
Object result = future.get(); |
489 |
< |
assertSame(TEST_STRING, result); |
511 |
> |
Future future = e.submit(callable); |
512 |
> |
assertSame(TEST_STRING, future.get()); |
513 |
|
} finally { |
514 |
|
joinPool(e); |
515 |
|
} |
516 |
< |
} finally { |
517 |
< |
Policy.setPolicy(savedPolicy); |
518 |
< |
} |
516 |
> |
}}; |
517 |
> |
|
518 |
> |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
519 |
|
} |
520 |
|
|
521 |
|
/** |
522 |
|
* A submitted failed privileged exception action reports exception |
523 |
|
*/ |
524 |
< |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
525 |
< |
Policy savedPolicy = null; |
526 |
< |
try { |
527 |
< |
savedPolicy = Policy.getPolicy(); |
528 |
< |
AdjustablePolicy policy = new AdjustablePolicy(); |
529 |
< |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
507 |
< |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
508 |
< |
Policy.setPolicy(policy); |
509 |
< |
} catch (AccessControlException ok) { |
510 |
< |
return; |
511 |
< |
} |
512 |
< |
|
513 |
< |
try { |
524 |
> |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
525 |
> |
final Callable callable = |
526 |
> |
Executors.callable(new PrivilegedExceptionAction() { |
527 |
> |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
528 |
> |
Runnable r = new CheckedRunnable() { |
529 |
> |
public void realRun() throws Exception { |
530 |
|
ExecutorService e = new ForkJoinPool(1); |
531 |
|
try { |
532 |
< |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
533 |
< |
public Object run() throws Exception { |
534 |
< |
throw new IndexOutOfBoundsException(); |
535 |
< |
}})); |
536 |
< |
|
537 |
< |
Object result = future.get(); |
538 |
< |
shouldThrow(); |
523 |
< |
} catch (ExecutionException success) { |
524 |
< |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
532 |
> |
Future future = e.submit(callable); |
533 |
> |
try { |
534 |
> |
future.get(); |
535 |
> |
shouldThrow(); |
536 |
> |
} catch (ExecutionException success) { |
537 |
> |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
538 |
> |
} |
539 |
|
} finally { |
540 |
|
joinPool(e); |
541 |
|
} |
542 |
< |
} finally { |
543 |
< |
Policy.setPolicy(savedPolicy); |
544 |
< |
} |
542 |
> |
}}; |
543 |
> |
|
544 |
> |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
545 |
|
} |
546 |
|
|
547 |
|
/** |
558 |
|
} |
559 |
|
} |
560 |
|
|
547 |
– |
|
561 |
|
/** |
562 |
|
* submit(null callable) throws NullPointerException |
563 |
|
*/ |
572 |
|
} |
573 |
|
} |
574 |
|
|
562 |
– |
|
575 |
|
/** |
576 |
|
* submit(callable).get() throws InterruptedException if interrupted |
577 |
|
*/ |
609 |
|
ForkJoinPool p = new ForkJoinPool(1); |
610 |
|
try { |
611 |
|
p.submit(new Callable() { |
612 |
< |
public Object call() { |
613 |
< |
int i = 5/0; |
602 |
< |
return Boolean.TRUE; |
603 |
< |
}}).get(); |
612 |
> |
public Object call() { throw new ArithmeticException(); }}) |
613 |
> |
.get(); |
614 |
|
shouldThrow(); |
615 |
|
} catch (ExecutionException success) { |
616 |
|
assertTrue(success.getCause() instanceof ArithmeticException); |
798 |
|
} |
799 |
|
} |
800 |
|
|
791 |
– |
|
801 |
|
/** |
802 |
|
* timed invokeAny(null) throws NullPointerException |
803 |
|
*/ |
987 |
|
l.add(new StringTask()); |
988 |
|
l.add(new StringTask()); |
989 |
|
List<Future<String>> futures |
990 |
< |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
990 |
> |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
991 |
|
assertEquals(2, futures.size()); |
992 |
|
for (Future<String> future : futures) |
993 |
|
assertSame(TEST_STRING, future.get()); |