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 |
*/ |
6 |
|
7 |
import junit.framework.*; |
8 |
import java.util.ArrayList; |
9 |
import java.util.Collection; |
10 |
import java.util.List; |
11 |
import java.util.concurrent.Executors; |
12 |
import java.util.concurrent.ExecutorService; |
13 |
import java.util.concurrent.AbstractExecutorService; |
14 |
import java.util.concurrent.CountDownLatch; |
15 |
import java.util.concurrent.Callable; |
16 |
import java.util.concurrent.Future; |
17 |
import java.util.concurrent.ExecutionException; |
18 |
import java.util.concurrent.CancellationException; |
19 |
import java.util.concurrent.RejectedExecutionException; |
20 |
import java.util.concurrent.ForkJoinPool; |
21 |
import java.util.concurrent.ForkJoinTask; |
22 |
import java.util.concurrent.ForkJoinWorkerThread; |
23 |
import java.util.concurrent.RecursiveTask; |
24 |
import java.util.concurrent.TimeUnit; |
25 |
import java.util.concurrent.atomic.AtomicBoolean; |
26 |
import java.util.concurrent.locks.ReentrantLock; |
27 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
28 |
import java.security.AccessControlException; |
29 |
import java.security.Policy; |
30 |
import java.security.PrivilegedAction; |
31 |
import java.security.PrivilegedExceptionAction; |
32 |
|
33 |
public class ForkJoinPoolTest extends JSR166TestCase { |
34 |
public static void main(String[] args) { |
35 |
junit.textui.TestRunner.run(suite()); |
36 |
} |
37 |
|
38 |
public static Test suite() { |
39 |
return new TestSuite(ForkJoinPoolTest.class); |
40 |
} |
41 |
|
42 |
/** |
43 |
* Testing coverage notes: |
44 |
* |
45 |
* 1. shutdown and related methods are tested via super.joinPool. |
46 |
* |
47 |
* 2. newTaskFor and adapters are tested in submit/invoke tests |
48 |
* |
49 |
* 3. We cannot portably test monitoring methods such as |
50 |
* getStealCount() since they rely ultimately on random task |
51 |
* stealing that may cause tasks not to be stolen/propagated |
52 |
* across threads, especially on uniprocessors. |
53 |
* |
54 |
* 4. There are no independently testable ForkJoinWorkerThread |
55 |
* methods, but they are covered here and in task tests. |
56 |
*/ |
57 |
|
58 |
// Some classes to test extension and factory methods |
59 |
|
60 |
static class MyHandler implements Thread.UncaughtExceptionHandler { |
61 |
volatile int catches = 0; |
62 |
public void uncaughtException(Thread t, Throwable e) { |
63 |
++catches; |
64 |
} |
65 |
} |
66 |
|
67 |
// to test handlers |
68 |
static class FailingFJWSubclass extends ForkJoinWorkerThread { |
69 |
public FailingFJWSubclass(ForkJoinPool p) { super(p) ; } |
70 |
protected void onStart() { super.onStart(); throw new Error(); } |
71 |
} |
72 |
|
73 |
static class FailingThreadFactory |
74 |
implements ForkJoinPool.ForkJoinWorkerThreadFactory { |
75 |
volatile int calls = 0; |
76 |
public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
77 |
if (++calls > 1) return null; |
78 |
return new FailingFJWSubclass(p); |
79 |
} |
80 |
} |
81 |
|
82 |
static class SubFJP extends ForkJoinPool { // to expose protected |
83 |
SubFJP() { super(1); } |
84 |
public int drainTasksTo(Collection<? super ForkJoinTask<?>> c) { |
85 |
return super.drainTasksTo(c); |
86 |
} |
87 |
public ForkJoinTask<?> pollSubmission() { |
88 |
return super.pollSubmission(); |
89 |
} |
90 |
} |
91 |
|
92 |
static class ManagedLocker implements ForkJoinPool.ManagedBlocker { |
93 |
final ReentrantLock lock; |
94 |
boolean hasLock = false; |
95 |
ManagedLocker(ReentrantLock lock) { this.lock = lock; } |
96 |
public boolean block() { |
97 |
if (!hasLock) |
98 |
lock.lock(); |
99 |
return true; |
100 |
} |
101 |
public boolean isReleasable() { |
102 |
return hasLock || (hasLock = lock.tryLock()); |
103 |
} |
104 |
} |
105 |
|
106 |
// A simple recursive task for testing |
107 |
static final class FibTask extends RecursiveTask<Integer> { |
108 |
final int number; |
109 |
FibTask(int n) { number = n; } |
110 |
public Integer compute() { |
111 |
int n = number; |
112 |
if (n <= 1) |
113 |
return n; |
114 |
FibTask f1 = new FibTask(n - 1); |
115 |
f1.fork(); |
116 |
return (new FibTask(n - 2)).compute() + f1.join(); |
117 |
} |
118 |
} |
119 |
|
120 |
// A failing task for testing |
121 |
static final class FailingTask extends ForkJoinTask<Void> { |
122 |
public final Void getRawResult() { return null; } |
123 |
protected final void setRawResult(Void mustBeNull) { } |
124 |
protected final boolean exec() { throw new Error(); } |
125 |
FailingTask() {} |
126 |
} |
127 |
|
128 |
// Fib needlessly using locking to test ManagedBlockers |
129 |
static final class LockingFibTask extends RecursiveTask<Integer> { |
130 |
final int number; |
131 |
final ManagedLocker locker; |
132 |
final ReentrantLock lock; |
133 |
LockingFibTask(int n, ManagedLocker locker, ReentrantLock lock) { |
134 |
number = n; |
135 |
this.locker = locker; |
136 |
this.lock = lock; |
137 |
} |
138 |
public Integer compute() { |
139 |
int n; |
140 |
LockingFibTask f1 = null; |
141 |
LockingFibTask f2 = null; |
142 |
locker.block(); |
143 |
n = number; |
144 |
if (n > 1) { |
145 |
f1 = new LockingFibTask(n - 1, locker, lock); |
146 |
f2 = new LockingFibTask(n - 2, locker, lock); |
147 |
} |
148 |
lock.unlock(); |
149 |
if (n <= 1) |
150 |
return n; |
151 |
else { |
152 |
f1.fork(); |
153 |
return f2.compute() + f1.join(); |
154 |
} |
155 |
} |
156 |
} |
157 |
|
158 |
/** |
159 |
* Successfully constructed pool reports default factory, |
160 |
* parallelism and async mode policies, no active threads or |
161 |
* tasks, and quiescent running state. |
162 |
*/ |
163 |
public void testDefaultInitialState() { |
164 |
ForkJoinPool p = new ForkJoinPool(1); |
165 |
try { |
166 |
assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
167 |
p.getFactory()); |
168 |
assertFalse(p.getAsyncMode()); |
169 |
assertEquals(0, p.getActiveThreadCount()); |
170 |
assertEquals(0, p.getStealCount()); |
171 |
assertEquals(0, p.getQueuedTaskCount()); |
172 |
assertEquals(0, p.getQueuedSubmissionCount()); |
173 |
assertFalse(p.hasQueuedSubmissions()); |
174 |
assertFalse(p.isShutdown()); |
175 |
assertFalse(p.isTerminating()); |
176 |
assertFalse(p.isTerminated()); |
177 |
} finally { |
178 |
joinPool(p); |
179 |
} |
180 |
} |
181 |
|
182 |
/** |
183 |
* Constructor throws if size argument is less than zero |
184 |
*/ |
185 |
public void testConstructor1() { |
186 |
try { |
187 |
new ForkJoinPool(-1); |
188 |
shouldThrow(); |
189 |
} catch (IllegalArgumentException success) {} |
190 |
} |
191 |
|
192 |
/** |
193 |
* Constructor throws if factory argument is null |
194 |
*/ |
195 |
public void testConstructor2() { |
196 |
try { |
197 |
new ForkJoinPool(1, null, null, false); |
198 |
shouldThrow(); |
199 |
} catch (NullPointerException success) {} |
200 |
} |
201 |
|
202 |
/** |
203 |
* getParallelism returns size set in constructor |
204 |
*/ |
205 |
public void testGetParallelism() { |
206 |
ForkJoinPool p = new ForkJoinPool(1); |
207 |
try { |
208 |
assertEquals(1, p.getParallelism()); |
209 |
} finally { |
210 |
joinPool(p); |
211 |
} |
212 |
} |
213 |
|
214 |
/** |
215 |
* getPoolSize returns number of started workers. |
216 |
*/ |
217 |
public void testGetPoolSize() { |
218 |
ForkJoinPool p = new ForkJoinPool(1); |
219 |
try { |
220 |
assertEquals(0, p.getActiveThreadCount()); |
221 |
Future<String> future = p.submit(new StringTask()); |
222 |
assertEquals(1, p.getPoolSize()); |
223 |
} finally { |
224 |
joinPool(p); |
225 |
} |
226 |
} |
227 |
|
228 |
/** |
229 |
* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
230 |
* |
231 |
* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
232 |
* performs its defined action |
233 |
*/ |
234 |
public void testSetUncaughtExceptionHandler() throws InterruptedException { |
235 |
final CountDownLatch uehInvoked = new CountDownLatch(1); |
236 |
final Thread.UncaughtExceptionHandler eh = |
237 |
new Thread.UncaughtExceptionHandler() { |
238 |
public void uncaughtException(Thread t, Throwable e) { |
239 |
uehInvoked.countDown(); |
240 |
}}; |
241 |
ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
242 |
eh, false); |
243 |
try { |
244 |
assertSame(eh, p.getUncaughtExceptionHandler()); |
245 |
try { |
246 |
p.execute(new FibTask(8)); |
247 |
assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
248 |
} catch (RejectedExecutionException ok) { |
249 |
} |
250 |
} finally { |
251 |
p.shutdownNow(); // failure might have prevented processing task |
252 |
joinPool(p); |
253 |
} |
254 |
} |
255 |
|
256 |
/** |
257 |
* After invoking a single task, isQuiescent eventually becomes |
258 |
* true, at which time queues are empty, threads are not active, |
259 |
* the task has completed successfully, and construction |
260 |
* parameters continue to hold |
261 |
*/ |
262 |
public void testIsQuiescent() throws Exception { |
263 |
ForkJoinPool p = new ForkJoinPool(2); |
264 |
try { |
265 |
assertTrue(p.isQuiescent()); |
266 |
long startTime = System.nanoTime(); |
267 |
FibTask f = new FibTask(20); |
268 |
p.invoke(f); |
269 |
assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
270 |
p.getFactory()); |
271 |
while (! p.isQuiescent()) { |
272 |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
273 |
throw new AssertionFailedError("timed out"); |
274 |
assertFalse(p.getAsyncMode()); |
275 |
assertFalse(p.isShutdown()); |
276 |
assertFalse(p.isTerminating()); |
277 |
assertFalse(p.isTerminated()); |
278 |
Thread.yield(); |
279 |
} |
280 |
|
281 |
assertTrue(p.isQuiescent()); |
282 |
assertFalse(p.getAsyncMode()); |
283 |
assertEquals(0, p.getActiveThreadCount()); |
284 |
assertEquals(0, p.getQueuedTaskCount()); |
285 |
assertEquals(0, p.getQueuedSubmissionCount()); |
286 |
assertFalse(p.hasQueuedSubmissions()); |
287 |
assertFalse(p.isShutdown()); |
288 |
assertFalse(p.isTerminating()); |
289 |
assertFalse(p.isTerminated()); |
290 |
assertTrue(f.isDone()); |
291 |
assertEquals(6765, (int) f.get()); |
292 |
} finally { |
293 |
joinPool(p); |
294 |
} |
295 |
} |
296 |
|
297 |
/** |
298 |
* Completed submit(ForkJoinTask) returns result |
299 |
*/ |
300 |
public void testSubmitForkJoinTask() throws Throwable { |
301 |
ForkJoinPool p = new ForkJoinPool(1); |
302 |
try { |
303 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
304 |
assertEquals(21, (int) f.get()); |
305 |
} finally { |
306 |
joinPool(p); |
307 |
} |
308 |
} |
309 |
|
310 |
/** |
311 |
* A task submitted after shutdown is rejected |
312 |
*/ |
313 |
public void testSubmitAfterShutdown() { |
314 |
ForkJoinPool p = new ForkJoinPool(1); |
315 |
try { |
316 |
p.shutdown(); |
317 |
assertTrue(p.isShutdown()); |
318 |
try { |
319 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
320 |
shouldThrow(); |
321 |
} catch (RejectedExecutionException success) {} |
322 |
} finally { |
323 |
joinPool(p); |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* Pool maintains parallelism when using ManagedBlocker |
329 |
*/ |
330 |
public void testBlockingForkJoinTask() throws Throwable { |
331 |
ForkJoinPool p = new ForkJoinPool(4); |
332 |
try { |
333 |
ReentrantLock lock = new ReentrantLock(); |
334 |
ManagedLocker locker = new ManagedLocker(lock); |
335 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
336 |
p.execute(f); |
337 |
assertEquals(6765, (int) f.get()); |
338 |
} finally { |
339 |
p.shutdownNow(); // don't wait out shutdown |
340 |
} |
341 |
} |
342 |
|
343 |
/** |
344 |
* pollSubmission returns unexecuted submitted task, if present |
345 |
*/ |
346 |
public void testPollSubmission() { |
347 |
final CountDownLatch done = new CountDownLatch(1); |
348 |
SubFJP p = new SubFJP(); |
349 |
try { |
350 |
ForkJoinTask a = p.submit(awaiter(done)); |
351 |
ForkJoinTask b = p.submit(awaiter(done)); |
352 |
ForkJoinTask c = p.submit(awaiter(done)); |
353 |
ForkJoinTask r = p.pollSubmission(); |
354 |
assertTrue(r == a || r == b || r == c); |
355 |
assertFalse(r.isDone()); |
356 |
} finally { |
357 |
done.countDown(); |
358 |
joinPool(p); |
359 |
} |
360 |
} |
361 |
|
362 |
/** |
363 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
364 |
*/ |
365 |
public void testDrainTasksTo() { |
366 |
final CountDownLatch done = new CountDownLatch(1); |
367 |
SubFJP p = new SubFJP(); |
368 |
try { |
369 |
ForkJoinTask a = p.submit(awaiter(done)); |
370 |
ForkJoinTask b = p.submit(awaiter(done)); |
371 |
ForkJoinTask c = p.submit(awaiter(done)); |
372 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
373 |
p.drainTasksTo(al); |
374 |
assertTrue(al.size() > 0); |
375 |
for (ForkJoinTask r : al) { |
376 |
assertTrue(r == a || r == b || r == c); |
377 |
assertFalse(r.isDone()); |
378 |
} |
379 |
} finally { |
380 |
done.countDown(); |
381 |
joinPool(p); |
382 |
} |
383 |
} |
384 |
|
385 |
// FJ Versions of AbstractExecutorService tests |
386 |
|
387 |
/** |
388 |
* execute(runnable) runs it to completion |
389 |
*/ |
390 |
public void testExecuteRunnable() throws Throwable { |
391 |
ExecutorService e = new ForkJoinPool(1); |
392 |
try { |
393 |
final AtomicBoolean done = new AtomicBoolean(false); |
394 |
CheckedRunnable task = new CheckedRunnable() { |
395 |
public void realRun() { |
396 |
done.set(true); |
397 |
}}; |
398 |
Future<?> future = e.submit(task); |
399 |
assertNull(future.get()); |
400 |
assertNull(future.get(0, MILLISECONDS)); |
401 |
assertTrue(done.get()); |
402 |
assertTrue(future.isDone()); |
403 |
assertFalse(future.isCancelled()); |
404 |
} finally { |
405 |
joinPool(e); |
406 |
} |
407 |
} |
408 |
|
409 |
/** |
410 |
* Completed submit(callable) returns result |
411 |
*/ |
412 |
public void testSubmitCallable() throws Throwable { |
413 |
ExecutorService e = new ForkJoinPool(1); |
414 |
try { |
415 |
Future<String> future = e.submit(new StringTask()); |
416 |
assertSame(TEST_STRING, future.get()); |
417 |
assertTrue(future.isDone()); |
418 |
assertFalse(future.isCancelled()); |
419 |
} finally { |
420 |
joinPool(e); |
421 |
} |
422 |
} |
423 |
|
424 |
/** |
425 |
* Completed submit(runnable) returns successfully |
426 |
*/ |
427 |
public void testSubmitRunnable() throws Throwable { |
428 |
ExecutorService e = new ForkJoinPool(1); |
429 |
try { |
430 |
Future<?> future = e.submit(new NoOpRunnable()); |
431 |
assertNull(future.get()); |
432 |
assertTrue(future.isDone()); |
433 |
assertFalse(future.isCancelled()); |
434 |
} finally { |
435 |
joinPool(e); |
436 |
} |
437 |
} |
438 |
|
439 |
/** |
440 |
* Completed submit(runnable, result) returns result |
441 |
*/ |
442 |
public void testSubmitRunnable2() throws Throwable { |
443 |
ExecutorService e = new ForkJoinPool(1); |
444 |
try { |
445 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
446 |
assertSame(TEST_STRING, future.get()); |
447 |
assertTrue(future.isDone()); |
448 |
assertFalse(future.isCancelled()); |
449 |
} finally { |
450 |
joinPool(e); |
451 |
} |
452 |
} |
453 |
|
454 |
/** |
455 |
* A submitted privileged action runs to completion |
456 |
*/ |
457 |
public void testSubmitPrivilegedAction() throws Exception { |
458 |
Runnable r = new CheckedRunnable() { |
459 |
public void realRun() throws Exception { |
460 |
ExecutorService e = new ForkJoinPool(1); |
461 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
462 |
public Object run() { |
463 |
return TEST_STRING; |
464 |
}})); |
465 |
|
466 |
assertSame(TEST_STRING, future.get()); |
467 |
}}; |
468 |
|
469 |
runWithPermissions(r, |
470 |
new RuntimePermission("modifyThread")); |
471 |
} |
472 |
|
473 |
/** |
474 |
* A submitted privileged exception action runs to completion |
475 |
*/ |
476 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
477 |
Runnable r = new CheckedRunnable() { |
478 |
public void realRun() throws Exception { |
479 |
ExecutorService e = new ForkJoinPool(1); |
480 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
481 |
public Object run() { |
482 |
return TEST_STRING; |
483 |
}})); |
484 |
|
485 |
assertSame(TEST_STRING, future.get()); |
486 |
}}; |
487 |
|
488 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
489 |
} |
490 |
|
491 |
/** |
492 |
* A submitted failed privileged exception action reports exception |
493 |
*/ |
494 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
495 |
Runnable r = new CheckedRunnable() { |
496 |
public void realRun() throws Exception { |
497 |
ExecutorService e = new ForkJoinPool(1); |
498 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
499 |
public Object run() throws Exception { |
500 |
throw new IndexOutOfBoundsException(); |
501 |
}})); |
502 |
|
503 |
try { |
504 |
future.get(); |
505 |
shouldThrow(); |
506 |
} catch (ExecutionException success) { |
507 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
508 |
}}}; |
509 |
|
510 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
511 |
} |
512 |
|
513 |
/** |
514 |
* execute(null runnable) throws NullPointerException |
515 |
*/ |
516 |
public void testExecuteNullRunnable() { |
517 |
ExecutorService e = new ForkJoinPool(1); |
518 |
try { |
519 |
Future<?> future = e.submit((Runnable) null); |
520 |
shouldThrow(); |
521 |
} catch (NullPointerException success) { |
522 |
} finally { |
523 |
joinPool(e); |
524 |
} |
525 |
} |
526 |
|
527 |
/** |
528 |
* submit(null callable) throws NullPointerException |
529 |
*/ |
530 |
public void testSubmitNullCallable() { |
531 |
ExecutorService e = new ForkJoinPool(1); |
532 |
try { |
533 |
Future<String> future = e.submit((Callable) null); |
534 |
shouldThrow(); |
535 |
} catch (NullPointerException success) { |
536 |
} finally { |
537 |
joinPool(e); |
538 |
} |
539 |
} |
540 |
|
541 |
/** |
542 |
* submit(callable).get() throws InterruptedException if interrupted |
543 |
*/ |
544 |
public void testInterruptedSubmit() throws InterruptedException { |
545 |
final CountDownLatch submitted = new CountDownLatch(1); |
546 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
547 |
final ExecutorService p = new ForkJoinPool(1); |
548 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
549 |
public Void realCall() throws InterruptedException { |
550 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
551 |
return null; |
552 |
}}; |
553 |
try { |
554 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
555 |
public void realRun() throws Exception { |
556 |
Future<Void> future = p.submit(awaiter); |
557 |
submitted.countDown(); |
558 |
future.get(); |
559 |
}}); |
560 |
t.start(); |
561 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
562 |
t.interrupt(); |
563 |
t.join(); |
564 |
} finally { |
565 |
quittingTime.countDown(); |
566 |
joinPool(p); |
567 |
} |
568 |
} |
569 |
|
570 |
/** |
571 |
* get of submit(callable) throws ExecutionException if callable |
572 |
* throws exception |
573 |
*/ |
574 |
public void testSubmitEE() throws Throwable { |
575 |
ForkJoinPool p = new ForkJoinPool(1); |
576 |
try { |
577 |
p.submit(new Callable() { |
578 |
public Object call() { throw new ArithmeticException(); }}) |
579 |
.get(); |
580 |
shouldThrow(); |
581 |
} catch (ExecutionException success) { |
582 |
assertTrue(success.getCause() instanceof ArithmeticException); |
583 |
} finally { |
584 |
joinPool(p); |
585 |
} |
586 |
} |
587 |
|
588 |
/** |
589 |
* invokeAny(null) throws NullPointerException |
590 |
*/ |
591 |
public void testInvokeAny1() throws Throwable { |
592 |
ExecutorService e = new ForkJoinPool(1); |
593 |
try { |
594 |
e.invokeAny(null); |
595 |
shouldThrow(); |
596 |
} catch (NullPointerException success) { |
597 |
} finally { |
598 |
joinPool(e); |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* invokeAny(empty collection) throws IllegalArgumentException |
604 |
*/ |
605 |
public void testInvokeAny2() throws Throwable { |
606 |
ExecutorService e = new ForkJoinPool(1); |
607 |
try { |
608 |
e.invokeAny(new ArrayList<Callable<String>>()); |
609 |
shouldThrow(); |
610 |
} catch (IllegalArgumentException success) { |
611 |
} finally { |
612 |
joinPool(e); |
613 |
} |
614 |
} |
615 |
|
616 |
/** |
617 |
* invokeAny(c) throws NullPointerException if c has a single null element |
618 |
*/ |
619 |
public void testInvokeAny3() throws Throwable { |
620 |
ExecutorService e = new ForkJoinPool(1); |
621 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
622 |
l.add(null); |
623 |
try { |
624 |
e.invokeAny(l); |
625 |
shouldThrow(); |
626 |
} catch (NullPointerException success) { |
627 |
} finally { |
628 |
joinPool(e); |
629 |
} |
630 |
} |
631 |
|
632 |
/** |
633 |
* invokeAny(c) throws NullPointerException if c has null elements |
634 |
*/ |
635 |
public void testInvokeAny4() throws Throwable { |
636 |
CountDownLatch latch = new CountDownLatch(1); |
637 |
ExecutorService e = new ForkJoinPool(1); |
638 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
639 |
l.add(latchAwaitingStringTask(latch)); |
640 |
l.add(null); |
641 |
try { |
642 |
e.invokeAny(l); |
643 |
shouldThrow(); |
644 |
} catch (NullPointerException success) { |
645 |
} finally { |
646 |
latch.countDown(); |
647 |
joinPool(e); |
648 |
} |
649 |
} |
650 |
|
651 |
/** |
652 |
* invokeAny(c) throws ExecutionException if no task in c completes |
653 |
*/ |
654 |
public void testInvokeAny5() throws Throwable { |
655 |
ExecutorService e = new ForkJoinPool(1); |
656 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
657 |
l.add(new NPETask()); |
658 |
try { |
659 |
e.invokeAny(l); |
660 |
shouldThrow(); |
661 |
} catch (ExecutionException success) { |
662 |
assertTrue(success.getCause() instanceof NullPointerException); |
663 |
} finally { |
664 |
joinPool(e); |
665 |
} |
666 |
} |
667 |
|
668 |
/** |
669 |
* invokeAny(c) returns result of some task in c if at least one completes |
670 |
*/ |
671 |
public void testInvokeAny6() throws Throwable { |
672 |
ExecutorService e = new ForkJoinPool(1); |
673 |
try { |
674 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
675 |
l.add(new StringTask()); |
676 |
l.add(new StringTask()); |
677 |
String result = e.invokeAny(l); |
678 |
assertSame(TEST_STRING, result); |
679 |
} finally { |
680 |
joinPool(e); |
681 |
} |
682 |
} |
683 |
|
684 |
/** |
685 |
* invokeAll(null) throws NullPointerException |
686 |
*/ |
687 |
public void testInvokeAll1() throws Throwable { |
688 |
ExecutorService e = new ForkJoinPool(1); |
689 |
try { |
690 |
e.invokeAll(null); |
691 |
shouldThrow(); |
692 |
} catch (NullPointerException success) { |
693 |
} finally { |
694 |
joinPool(e); |
695 |
} |
696 |
} |
697 |
|
698 |
/** |
699 |
* invokeAll(empty collection) returns empty collection |
700 |
*/ |
701 |
public void testInvokeAll2() throws InterruptedException { |
702 |
ExecutorService e = new ForkJoinPool(1); |
703 |
try { |
704 |
List<Future<String>> r |
705 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
706 |
assertTrue(r.isEmpty()); |
707 |
} finally { |
708 |
joinPool(e); |
709 |
} |
710 |
} |
711 |
|
712 |
/** |
713 |
* invokeAll(c) throws NullPointerException if c has null elements |
714 |
*/ |
715 |
public void testInvokeAll3() throws InterruptedException { |
716 |
ExecutorService e = new ForkJoinPool(1); |
717 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
718 |
l.add(new StringTask()); |
719 |
l.add(null); |
720 |
try { |
721 |
e.invokeAll(l); |
722 |
shouldThrow(); |
723 |
} catch (NullPointerException success) { |
724 |
} finally { |
725 |
joinPool(e); |
726 |
} |
727 |
} |
728 |
|
729 |
/** |
730 |
* get of returned element of invokeAll(c) throws |
731 |
* ExecutionException on failed task |
732 |
*/ |
733 |
public void testInvokeAll4() throws Throwable { |
734 |
ExecutorService e = new ForkJoinPool(1); |
735 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
736 |
l.add(new NPETask()); |
737 |
List<Future<String>> futures = e.invokeAll(l); |
738 |
assertEquals(1, futures.size()); |
739 |
try { |
740 |
futures.get(0).get(); |
741 |
shouldThrow(); |
742 |
} catch (ExecutionException success) { |
743 |
assertTrue(success.getCause() instanceof NullPointerException); |
744 |
} finally { |
745 |
joinPool(e); |
746 |
} |
747 |
} |
748 |
|
749 |
/** |
750 |
* invokeAll(c) returns results of all completed tasks in c |
751 |
*/ |
752 |
public void testInvokeAll5() throws Throwable { |
753 |
ExecutorService e = new ForkJoinPool(1); |
754 |
try { |
755 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
756 |
l.add(new StringTask()); |
757 |
l.add(new StringTask()); |
758 |
List<Future<String>> futures = e.invokeAll(l); |
759 |
assertEquals(2, futures.size()); |
760 |
for (Future<String> future : futures) |
761 |
assertSame(TEST_STRING, future.get()); |
762 |
} finally { |
763 |
joinPool(e); |
764 |
} |
765 |
} |
766 |
|
767 |
/** |
768 |
* timed invokeAny(null) throws NullPointerException |
769 |
*/ |
770 |
public void testTimedInvokeAny1() throws Throwable { |
771 |
ExecutorService e = new ForkJoinPool(1); |
772 |
try { |
773 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
774 |
shouldThrow(); |
775 |
} catch (NullPointerException success) { |
776 |
} finally { |
777 |
joinPool(e); |
778 |
} |
779 |
} |
780 |
|
781 |
/** |
782 |
* timed invokeAny(null time unit) throws NullPointerException |
783 |
*/ |
784 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
785 |
ExecutorService e = new ForkJoinPool(1); |
786 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
787 |
l.add(new StringTask()); |
788 |
try { |
789 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
790 |
shouldThrow(); |
791 |
} catch (NullPointerException success) { |
792 |
} finally { |
793 |
joinPool(e); |
794 |
} |
795 |
} |
796 |
|
797 |
/** |
798 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
799 |
*/ |
800 |
public void testTimedInvokeAny2() throws Throwable { |
801 |
ExecutorService e = new ForkJoinPool(1); |
802 |
try { |
803 |
e.invokeAny(new ArrayList<Callable<String>>(), |
804 |
MEDIUM_DELAY_MS, MILLISECONDS); |
805 |
shouldThrow(); |
806 |
} catch (IllegalArgumentException success) { |
807 |
} finally { |
808 |
joinPool(e); |
809 |
} |
810 |
} |
811 |
|
812 |
/** |
813 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
814 |
*/ |
815 |
public void testTimedInvokeAny3() throws Throwable { |
816 |
CountDownLatch latch = new CountDownLatch(1); |
817 |
ExecutorService e = new ForkJoinPool(1); |
818 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
819 |
l.add(latchAwaitingStringTask(latch)); |
820 |
l.add(null); |
821 |
try { |
822 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
823 |
shouldThrow(); |
824 |
} catch (NullPointerException success) { |
825 |
} finally { |
826 |
latch.countDown(); |
827 |
joinPool(e); |
828 |
} |
829 |
} |
830 |
|
831 |
/** |
832 |
* timed invokeAny(c) throws ExecutionException if no task completes |
833 |
*/ |
834 |
public void testTimedInvokeAny4() throws Throwable { |
835 |
ExecutorService e = new ForkJoinPool(1); |
836 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
837 |
l.add(new NPETask()); |
838 |
try { |
839 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
840 |
shouldThrow(); |
841 |
} catch (ExecutionException success) { |
842 |
assertTrue(success.getCause() instanceof NullPointerException); |
843 |
} finally { |
844 |
joinPool(e); |
845 |
} |
846 |
} |
847 |
|
848 |
/** |
849 |
* timed invokeAny(c) returns result of some task in c |
850 |
*/ |
851 |
public void testTimedInvokeAny5() throws Throwable { |
852 |
ExecutorService e = new ForkJoinPool(1); |
853 |
try { |
854 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
855 |
l.add(new StringTask()); |
856 |
l.add(new StringTask()); |
857 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
858 |
assertSame(TEST_STRING, result); |
859 |
} finally { |
860 |
joinPool(e); |
861 |
} |
862 |
} |
863 |
|
864 |
/** |
865 |
* timed invokeAll(null) throws NullPointerException |
866 |
*/ |
867 |
public void testTimedInvokeAll1() throws Throwable { |
868 |
ExecutorService e = new ForkJoinPool(1); |
869 |
try { |
870 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
871 |
shouldThrow(); |
872 |
} catch (NullPointerException success) { |
873 |
} finally { |
874 |
joinPool(e); |
875 |
} |
876 |
} |
877 |
|
878 |
/** |
879 |
* timed invokeAll(null time unit) throws NullPointerException |
880 |
*/ |
881 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
882 |
ExecutorService e = new ForkJoinPool(1); |
883 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
884 |
l.add(new StringTask()); |
885 |
try { |
886 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
887 |
shouldThrow(); |
888 |
} catch (NullPointerException success) { |
889 |
} finally { |
890 |
joinPool(e); |
891 |
} |
892 |
} |
893 |
|
894 |
/** |
895 |
* timed invokeAll(empty collection) returns empty collection |
896 |
*/ |
897 |
public void testTimedInvokeAll2() throws InterruptedException { |
898 |
ExecutorService e = new ForkJoinPool(1); |
899 |
try { |
900 |
List<Future<String>> r |
901 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
902 |
MEDIUM_DELAY_MS, MILLISECONDS); |
903 |
assertTrue(r.isEmpty()); |
904 |
} finally { |
905 |
joinPool(e); |
906 |
} |
907 |
} |
908 |
|
909 |
/** |
910 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
911 |
*/ |
912 |
public void testTimedInvokeAll3() throws InterruptedException { |
913 |
ExecutorService e = new ForkJoinPool(1); |
914 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
915 |
l.add(new StringTask()); |
916 |
l.add(null); |
917 |
try { |
918 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
919 |
shouldThrow(); |
920 |
} catch (NullPointerException success) { |
921 |
} finally { |
922 |
joinPool(e); |
923 |
} |
924 |
} |
925 |
|
926 |
/** |
927 |
* get of returned element of invokeAll(c) throws exception on failed task |
928 |
*/ |
929 |
public void testTimedInvokeAll4() throws Throwable { |
930 |
ExecutorService e = new ForkJoinPool(1); |
931 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
932 |
l.add(new NPETask()); |
933 |
List<Future<String>> futures |
934 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
935 |
assertEquals(1, futures.size()); |
936 |
try { |
937 |
futures.get(0).get(); |
938 |
shouldThrow(); |
939 |
} catch (ExecutionException success) { |
940 |
assertTrue(success.getCause() instanceof NullPointerException); |
941 |
} finally { |
942 |
joinPool(e); |
943 |
} |
944 |
} |
945 |
|
946 |
/** |
947 |
* timed invokeAll(c) returns results of all completed tasks in c |
948 |
*/ |
949 |
public void testTimedInvokeAll5() throws Throwable { |
950 |
ExecutorService e = new ForkJoinPool(1); |
951 |
try { |
952 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
953 |
l.add(new StringTask()); |
954 |
l.add(new StringTask()); |
955 |
List<Future<String>> futures |
956 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
957 |
assertEquals(2, futures.size()); |
958 |
for (Future<String> future : futures) |
959 |
assertSame(TEST_STRING, future.get()); |
960 |
} finally { |
961 |
joinPool(e); |
962 |
} |
963 |
} |
964 |
|
965 |
} |