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Revision Log
Revision 1.28 - (view) (download)
| 1 : | dl | 1.1 | /* |
| 2 : | dl | 1.10 | * 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 : | jsr166 | 1.24 | * http://creativecommons.org/publicdomain/zero/1.0/ |
| 5 : | jsr166 | 1.12 | * Other contributors include Andrew Wright, Jeffrey Hayes, |
| 6 : | * Pat Fisher, Mike Judd. | ||
| 7 : | dl | 1.1 | */ |
| 8 : | |||
| 9 : | import junit.framework.*; | ||
| 10 : | jsr166 | 1.26 | import java.util.concurrent.Callable; |
| 11 : | import java.util.concurrent.CancellationException; | ||
| 12 : | import java.util.concurrent.CountDownLatch; | ||
| 13 : | import java.util.concurrent.ExecutionException; | ||
| 14 : | import java.util.concurrent.Future; | ||
| 15 : | import java.util.concurrent.FutureTask; | ||
| 16 : | import java.util.concurrent.TimeoutException; | ||
| 17 : | jsr166 | 1.15 | import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 18 : | jsr166 | 1.22 | import static java.util.concurrent.TimeUnit.SECONDS; |
| 19 : | dl | 1.4 | import java.util.*; |
| 20 : | dl | 1.1 | |
| 21 : | dl | 1.4 | public class FutureTaskTest extends JSR166TestCase { |
| 22 : | dl | 1.1 | |
| 23 : | public static void main(String[] args) { | ||
| 24 : | jsr166 | 1.19 | junit.textui.TestRunner.run(suite()); |
| 25 : | dl | 1.1 | } |
| 26 : | public static Test suite() { | ||
| 27 : | jsr166 | 1.16 | return new TestSuite(FutureTaskTest.class); |
| 28 : | dl | 1.1 | } |
| 29 : | |||
| 30 : | jsr166 | 1.22 | void checkNotDone(Future<?> f) { |
| 31 : | assertFalse(f.isDone()); | ||
| 32 : | assertFalse(f.isCancelled()); | ||
| 33 : | } | ||
| 34 : | |||
| 35 : | <T> void checkCompletedNormally(Future<T> f, T expected) { | ||
| 36 : | assertTrue(f.isDone()); | ||
| 37 : | assertFalse(f.isCancelled()); | ||
| 38 : | |||
| 39 : | try { | ||
| 40 : | assertSame(expected, f.get()); | ||
| 41 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 42 : | try { | ||
| 43 : | assertSame(expected, f.get(5L, SECONDS)); | ||
| 44 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 45 : | |||
| 46 : | assertFalse(f.cancel(false)); | ||
| 47 : | assertFalse(f.cancel(true)); | ||
| 48 : | } | ||
| 49 : | |||
| 50 : | void checkCancelled(Future<?> f) { | ||
| 51 : | assertTrue(f.isDone()); | ||
| 52 : | assertTrue(f.isCancelled()); | ||
| 53 : | |||
| 54 : | try { | ||
| 55 : | f.get(); | ||
| 56 : | shouldThrow(); | ||
| 57 : | } catch (CancellationException success) { | ||
| 58 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 59 : | |||
| 60 : | try { | ||
| 61 : | f.get(5L, SECONDS); | ||
| 62 : | shouldThrow(); | ||
| 63 : | } catch (CancellationException success) { | ||
| 64 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 65 : | |||
| 66 : | assertFalse(f.cancel(false)); | ||
| 67 : | assertFalse(f.cancel(true)); | ||
| 68 : | } | ||
| 69 : | |||
| 70 : | void checkCompletedAbnormally(Future<?> f, Throwable t) { | ||
| 71 : | assertTrue(f.isDone()); | ||
| 72 : | assertFalse(f.isCancelled()); | ||
| 73 : | |||
| 74 : | try { | ||
| 75 : | f.get(); | ||
| 76 : | shouldThrow(); | ||
| 77 : | } catch (ExecutionException success) { | ||
| 78 : | assertSame(t, success.getCause()); | ||
| 79 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 80 : | |||
| 81 : | try { | ||
| 82 : | f.get(5L, SECONDS); | ||
| 83 : | shouldThrow(); | ||
| 84 : | } catch (ExecutionException success) { | ||
| 85 : | assertSame(t, success.getCause()); | ||
| 86 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 87 : | |||
| 88 : | assertFalse(f.cancel(false)); | ||
| 89 : | assertFalse(f.cancel(true)); | ||
| 90 : | } | ||
| 91 : | |||
| 92 : | dl | 1.4 | /** |
| 93 : | * Subclass to expose protected methods | ||
| 94 : | */ | ||
| 95 : | dl | 1.7 | static class PublicFutureTask extends FutureTask { |
| 96 : | public PublicFutureTask(Callable r) { super(r); } | ||
| 97 : | dl | 1.9 | public boolean runAndReset() { return super.runAndReset(); } |
| 98 : | dl | 1.4 | public void set(Object x) { super.set(x); } |
| 99 : | public void setException(Throwable t) { super.setException(t); } | ||
| 100 : | } | ||
| 101 : | dl | 1.1 | |
| 102 : | dl | 1.5 | /** |
| 103 : | dl | 1.6 | * Creating a future with a null callable throws NPE |
| 104 : | dl | 1.5 | */ |
| 105 : | public void testConstructor() { | ||
| 106 : | dl | 1.3 | try { |
| 107 : | FutureTask task = new FutureTask(null); | ||
| 108 : | jsr166 | 1.17 | shouldThrow(); |
| 109 : | jsr166 | 1.15 | } catch (NullPointerException success) {} |
| 110 : | dl | 1.3 | } |
| 111 : | |||
| 112 : | dl | 1.5 | /** |
| 113 : | dl | 1.6 | * creating a future with null runnable fails |
| 114 : | dl | 1.5 | */ |
| 115 : | public void testConstructor2() { | ||
| 116 : | dl | 1.3 | try { |
| 117 : | FutureTask task = new FutureTask(null, Boolean.TRUE); | ||
| 118 : | jsr166 | 1.17 | shouldThrow(); |
| 119 : | jsr166 | 1.15 | } catch (NullPointerException success) {} |
| 120 : | dl | 1.3 | } |
| 121 : | |||
| 122 : | dl | 1.5 | /** |
| 123 : | dl | 1.6 | * isDone is true when a task completes |
| 124 : | dl | 1.5 | */ |
| 125 : | public void testIsDone() { | ||
| 126 : | jsr166 | 1.15 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 127 : | jsr166 | 1.16 | task.run(); |
| 128 : | assertTrue(task.isDone()); | ||
| 129 : | jsr166 | 1.22 | checkCompletedNormally(task, Boolean.TRUE); |
| 130 : | dl | 1.4 | } |
| 131 : | |||
| 132 : | dl | 1.5 | /** |
| 133 : | dl | 1.9 | * runAndReset of a non-cancelled task succeeds |
| 134 : | dl | 1.5 | */ |
| 135 : | dl | 1.9 | public void testRunAndReset() { |
| 136 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 137 : | jsr166 | 1.16 | assertTrue(task.runAndReset()); |
| 138 : | jsr166 | 1.22 | checkNotDone(task); |
| 139 : | dl | 1.4 | } |
| 140 : | |||
| 141 : | dl | 1.5 | /** |
| 142 : | dl | 1.9 | * runAndReset after cancellation fails |
| 143 : | dl | 1.5 | */ |
| 144 : | dl | 1.4 | public void testResetAfterCancel() { |
| 145 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 146 : | dl | 1.4 | assertTrue(task.cancel(false)); |
| 147 : | jsr166 | 1.16 | assertFalse(task.runAndReset()); |
| 148 : | jsr166 | 1.22 | checkCancelled(task); |
| 149 : | dl | 1.4 | } |
| 150 : | |||
| 151 : | dl | 1.5 | /** |
| 152 : | dl | 1.11 | * setting value causes get to return it |
| 153 : | dl | 1.5 | */ |
| 154 : | jsr166 | 1.15 | public void testSet() throws Exception { |
| 155 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 156 : | dl | 1.4 | task.set(one); |
| 157 : | jsr166 | 1.18 | assertSame(task.get(), one); |
| 158 : | jsr166 | 1.22 | checkCompletedNormally(task, one); |
| 159 : | dl | 1.4 | } |
| 160 : | |||
| 161 : | dl | 1.5 | /** |
| 162 : | dl | 1.6 | * setException causes get to throw ExecutionException |
| 163 : | dl | 1.5 | */ |
| 164 : | jsr166 | 1.15 | public void testSetException() throws Exception { |
| 165 : | dl | 1.4 | Exception nse = new NoSuchElementException(); |
| 166 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 167 : | dl | 1.4 | task.setException(nse); |
| 168 : | try { | ||
| 169 : | Object x = task.get(); | ||
| 170 : | jsr166 | 1.17 | shouldThrow(); |
| 171 : | jsr166 | 1.15 | } catch (ExecutionException success) { |
| 172 : | assertSame(success.getCause(), nse); | ||
| 173 : | jsr166 | 1.22 | checkCompletedAbnormally(task, nse); |
| 174 : | dl | 1.4 | } |
| 175 : | } | ||
| 176 : | |||
| 177 : | dl | 1.5 | /** |
| 178 : | jsr166 | 1.21 | * Cancelling before running succeeds |
| 179 : | dl | 1.5 | */ |
| 180 : | dl | 1.1 | public void testCancelBeforeRun() { |
| 181 : | jsr166 | 1.15 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 182 : | dl | 1.1 | assertTrue(task.cancel(false)); |
| 183 : | jsr166 | 1.16 | task.run(); |
| 184 : | jsr166 | 1.22 | checkCancelled(task); |
| 185 : | dl | 1.1 | } |
| 186 : | |||
| 187 : | dl | 1.5 | /** |
| 188 : | dl | 1.6 | * Cancel(true) before run succeeds |
| 189 : | dl | 1.5 | */ |
| 190 : | dl | 1.1 | public void testCancelBeforeRun2() { |
| 191 : | jsr166 | 1.15 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 192 : | dl | 1.1 | assertTrue(task.cancel(true)); |
| 193 : | jsr166 | 1.16 | task.run(); |
| 194 : | jsr166 | 1.22 | checkCancelled(task); |
| 195 : | dl | 1.1 | } |
| 196 : | |||
| 197 : | dl | 1.5 | /** |
| 198 : | dl | 1.6 | * cancel of a completed task fails |
| 199 : | dl | 1.5 | */ |
| 200 : | dl | 1.1 | public void testCancelAfterRun() { |
| 201 : | jsr166 | 1.15 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 202 : | jsr166 | 1.16 | task.run(); |
| 203 : | dl | 1.1 | assertFalse(task.cancel(false)); |
| 204 : | jsr166 | 1.22 | checkCompletedNormally(task, Boolean.TRUE); |
| 205 : | dl | 1.1 | } |
| 206 : | |||
| 207 : | dl | 1.5 | /** |
| 208 : | dl | 1.6 | * cancel(true) interrupts a running task |
| 209 : | dl | 1.5 | */ |
| 210 : | jsr166 | 1.15 | public void testCancelInterrupt() throws InterruptedException { |
| 211 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(1); |
| 212 : | jsr166 | 1.16 | final FutureTask task = |
| 213 : | jsr166 | 1.22 | new FutureTask(new CheckedCallable<Object>() { |
| 214 : | public Object realCall() { | ||
| 215 : | threadStarted.countDown(); | ||
| 216 : | long t0 = System.nanoTime(); | ||
| 217 : | for (;;) { | ||
| 218 : | if (Thread.interrupted()) | ||
| 219 : | return Boolean.TRUE; | ||
| 220 : | if (millisElapsedSince(t0) > MEDIUM_DELAY_MS) | ||
| 221 : | fail("interrupt not delivered"); | ||
| 222 : | Thread.yield(); | ||
| 223 : | } | ||
| 224 : | jsr166 | 1.15 | }}); |
| 225 : | |||
| 226 : | jsr166 | 1.22 | Thread t = newStartedThread(task); |
| 227 : | threadStarted.await(); | ||
| 228 : | jsr166 | 1.15 | assertTrue(task.cancel(true)); |
| 229 : | jsr166 | 1.22 | checkCancelled(task); |
| 230 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 231 : | checkCancelled(task); | ||
| 232 : | dl | 1.1 | } |
| 233 : | |||
| 234 : | dl | 1.5 | /** |
| 235 : | dl | 1.6 | * cancel(false) does not interrupt a running task |
| 236 : | dl | 1.5 | */ |
| 237 : | jsr166 | 1.15 | public void testCancelNoInterrupt() throws InterruptedException { |
| 238 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(1); |
| 239 : | final CountDownLatch cancelled = new CountDownLatch(1); | ||
| 240 : | final FutureTask<Boolean> task = | ||
| 241 : | new FutureTask<Boolean>(new CheckedCallable<Boolean>() { | ||
| 242 : | public Boolean realCall() throws InterruptedException { | ||
| 243 : | threadStarted.countDown(); | ||
| 244 : | cancelled.await(MEDIUM_DELAY_MS, MILLISECONDS); | ||
| 245 : | assertFalse(Thread.interrupted()); | ||
| 246 : | dl | 1.1 | return Boolean.TRUE; |
| 247 : | jsr166 | 1.15 | }}); |
| 248 : | |||
| 249 : | jsr166 | 1.22 | Thread t = newStartedThread(task); |
| 250 : | threadStarted.await(); | ||
| 251 : | jsr166 | 1.15 | assertTrue(task.cancel(false)); |
| 252 : | jsr166 | 1.22 | checkCancelled(task); |
| 253 : | cancelled.countDown(); | ||
| 254 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 255 : | checkCancelled(task); | ||
| 256 : | dl | 1.1 | } |
| 257 : | |||
| 258 : | dl | 1.5 | /** |
| 259 : | jsr166 | 1.23 | * run in one thread causes get in another thread to retrieve value |
| 260 : | dl | 1.5 | */ |
| 261 : | jsr166 | 1.23 | public void testGetRun() throws InterruptedException { |
| 262 : | final CountDownLatch threadStarted = new CountDownLatch(1); | ||
| 263 : | |||
| 264 : | jsr166 | 1.22 | final FutureTask task = |
| 265 : | jsr166 | 1.15 | new FutureTask(new CheckedCallable<Object>() { |
| 266 : | jsr166 | 1.16 | public Object realCall() throws InterruptedException { |
| 267 : | dl | 1.1 | return Boolean.TRUE; |
| 268 : | jsr166 | 1.15 | }}); |
| 269 : | jsr166 | 1.22 | |
| 270 : | Thread t = newStartedThread(new CheckedRunnable() { | ||
| 271 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 272 : | jsr166 | 1.23 | threadStarted.countDown(); |
| 273 : | jsr166 | 1.22 | assertSame(Boolean.TRUE, task.get()); |
| 274 : | jsr166 | 1.15 | }}); |
| 275 : | dl | 1.1 | |
| 276 : | jsr166 | 1.23 | threadStarted.await(); |
| 277 : | checkNotDone(task); | ||
| 278 : | assertTrue(t.isAlive()); | ||
| 279 : | jsr166 | 1.22 | task.run(); |
| 280 : | checkCompletedNormally(task, Boolean.TRUE); | ||
| 281 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 282 : | dl | 1.1 | } |
| 283 : | |||
| 284 : | dl | 1.5 | /** |
| 285 : | jsr166 | 1.23 | * set in one thread causes get in another thread to retrieve value |
| 286 : | */ | ||
| 287 : | public void testGetSet() throws InterruptedException { | ||
| 288 : | final CountDownLatch threadStarted = new CountDownLatch(1); | ||
| 289 : | |||
| 290 : | final PublicFutureTask task = | ||
| 291 : | new PublicFutureTask(new CheckedCallable<Object>() { | ||
| 292 : | public Object realCall() throws InterruptedException { | ||
| 293 : | return Boolean.TRUE; | ||
| 294 : | }}); | ||
| 295 : | |||
| 296 : | Thread t = newStartedThread(new CheckedRunnable() { | ||
| 297 : | public void realRun() throws Exception { | ||
| 298 : | threadStarted.countDown(); | ||
| 299 : | assertSame(Boolean.FALSE, task.get()); | ||
| 300 : | }}); | ||
| 301 : | |||
| 302 : | threadStarted.await(); | ||
| 303 : | checkNotDone(task); | ||
| 304 : | assertTrue(t.isAlive()); | ||
| 305 : | task.set(Boolean.FALSE); | ||
| 306 : | checkCompletedNormally(task, Boolean.FALSE); | ||
| 307 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 308 : | } | ||
| 309 : | |||
| 310 : | /** | ||
| 311 : | * run in one thread causes timed get in another thread to retrieve value | ||
| 312 : | dl | 1.5 | */ |
| 313 : | jsr166 | 1.23 | public void testTimedGetRun() throws InterruptedException { |
| 314 : | final CountDownLatch threadStarted = new CountDownLatch(1); | ||
| 315 : | |||
| 316 : | jsr166 | 1.22 | final FutureTask task = |
| 317 : | jsr166 | 1.15 | new FutureTask(new CheckedCallable<Object>() { |
| 318 : | jsr166 | 1.16 | public Object realCall() throws InterruptedException { |
| 319 : | dl | 1.1 | return Boolean.TRUE; |
| 320 : | jsr166 | 1.15 | }}); |
| 321 : | jsr166 | 1.22 | |
| 322 : | Thread t = newStartedThread(new CheckedRunnable() { | ||
| 323 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 324 : | jsr166 | 1.23 | threadStarted.countDown(); |
| 325 : | assertSame(Boolean.TRUE, | ||
| 326 : | task.get(MEDIUM_DELAY_MS, MILLISECONDS)); | ||
| 327 : | jsr166 | 1.15 | }}); |
| 328 : | jsr166 | 1.12 | |
| 329 : | jsr166 | 1.23 | threadStarted.await(); |
| 330 : | checkNotDone(task); | ||
| 331 : | assertTrue(t.isAlive()); | ||
| 332 : | jsr166 | 1.22 | task.run(); |
| 333 : | checkCompletedNormally(task, Boolean.TRUE); | ||
| 334 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 335 : | dl | 1.1 | } |
| 336 : | |||
| 337 : | dl | 1.5 | /** |
| 338 : | jsr166 | 1.23 | * set in one thread causes timed get in another thread to retrieve value |
| 339 : | */ | ||
| 340 : | public void testTimedGetSet() throws InterruptedException { | ||
| 341 : | final CountDownLatch threadStarted = new CountDownLatch(1); | ||
| 342 : | |||
| 343 : | final PublicFutureTask task = | ||
| 344 : | new PublicFutureTask(new CheckedCallable<Object>() { | ||
| 345 : | public Object realCall() throws InterruptedException { | ||
| 346 : | return Boolean.TRUE; | ||
| 347 : | }}); | ||
| 348 : | |||
| 349 : | Thread t = newStartedThread(new CheckedRunnable() { | ||
| 350 : | public void realRun() throws Exception { | ||
| 351 : | threadStarted.countDown(); | ||
| 352 : | assertSame(Boolean.FALSE, | ||
| 353 : | task.get(MEDIUM_DELAY_MS, MILLISECONDS)); | ||
| 354 : | }}); | ||
| 355 : | |||
| 356 : | threadStarted.await(); | ||
| 357 : | checkNotDone(task); | ||
| 358 : | assertTrue(t.isAlive()); | ||
| 359 : | task.set(Boolean.FALSE); | ||
| 360 : | checkCompletedNormally(task, Boolean.FALSE); | ||
| 361 : | awaitTermination(t, MEDIUM_DELAY_MS); | ||
| 362 : | } | ||
| 363 : | |||
| 364 : | /** | ||
| 365 : | jsr166 | 1.21 | * Cancelling a task causes timed get in another thread to throw |
| 366 : | * CancellationException | ||
| 367 : | dl | 1.5 | */ |
| 368 : | jsr166 | 1.15 | public void testTimedGet_Cancellation() throws InterruptedException { |
| 369 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(2); |
| 370 : | final FutureTask task = | ||
| 371 : | jsr166 | 1.15 | new FutureTask(new CheckedInterruptedCallable<Object>() { |
| 372 : | jsr166 | 1.16 | public Object realCall() throws InterruptedException { |
| 373 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 374 : | dl | 1.25 | delay(LONG_DELAY_MS); |
| 375 : | jsr166 | 1.16 | return Boolean.TRUE; |
| 376 : | jsr166 | 1.15 | }}); |
| 377 : | |||
| 378 : | Thread t1 = new ThreadShouldThrow(CancellationException.class) { | ||
| 379 : | public void realRun() throws Exception { | ||
| 380 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 381 : | task.get(MEDIUM_DELAY_MS, MILLISECONDS); | ||
| 382 : | jsr166 | 1.15 | }}; |
| 383 : | jsr166 | 1.22 | Thread t2 = new Thread(task); |
| 384 : | jsr166 | 1.15 | t1.start(); |
| 385 : | t2.start(); | ||
| 386 : | jsr166 | 1.22 | threadStarted.await(); |
| 387 : | task.cancel(true); | ||
| 388 : | awaitTermination(t1, MEDIUM_DELAY_MS); | ||
| 389 : | awaitTermination(t2, MEDIUM_DELAY_MS); | ||
| 390 : | checkCancelled(task); | ||
| 391 : | dl | 1.1 | } |
| 392 : | dl | 1.6 | |
| 393 : | dl | 1.5 | /** |
| 394 : | jsr166 | 1.20 | * Cancelling a task causes get in another thread to throw |
| 395 : | * CancellationException | ||
| 396 : | dl | 1.5 | */ |
| 397 : | jsr166 | 1.15 | public void testGet_Cancellation() throws InterruptedException { |
| 398 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(2); |
| 399 : | final FutureTask task = | ||
| 400 : | jsr166 | 1.15 | new FutureTask(new CheckedInterruptedCallable<Object>() { |
| 401 : | jsr166 | 1.16 | public Object realCall() throws InterruptedException { |
| 402 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 403 : | dl | 1.25 | delay(LONG_DELAY_MS); |
| 404 : | jsr166 | 1.16 | return Boolean.TRUE; |
| 405 : | jsr166 | 1.15 | }}); |
| 406 : | jsr166 | 1.22 | |
| 407 : | jsr166 | 1.15 | Thread t1 = new ThreadShouldThrow(CancellationException.class) { |
| 408 : | public void realRun() throws Exception { | ||
| 409 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 410 : | task.get(); | ||
| 411 : | jsr166 | 1.15 | }}; |
| 412 : | jsr166 | 1.22 | Thread t2 = new Thread(task); |
| 413 : | jsr166 | 1.15 | t1.start(); |
| 414 : | t2.start(); | ||
| 415 : | jsr166 | 1.22 | threadStarted.await(); |
| 416 : | task.cancel(true); | ||
| 417 : | awaitTermination(t1, MEDIUM_DELAY_MS); | ||
| 418 : | awaitTermination(t2, MEDIUM_DELAY_MS); | ||
| 419 : | checkCancelled(task); | ||
| 420 : | dl | 1.1 | } |
| 421 : | jsr166 | 1.12 | |
| 422 : | dl | 1.5 | /** |
| 423 : | dl | 1.6 | * A runtime exception in task causes get to throw ExecutionException |
| 424 : | dl | 1.5 | */ |
| 425 : | jsr166 | 1.15 | public void testGet_ExecutionException() throws InterruptedException { |
| 426 : | jsr166 | 1.22 | final FutureTask task = new FutureTask(new Callable() { |
| 427 : | jsr166 | 1.16 | public Object call() { |
| 428 : | jsr166 | 1.15 | return 5/0; |
| 429 : | }}); | ||
| 430 : | |||
| 431 : | jsr166 | 1.22 | task.run(); |
| 432 : | jsr166 | 1.15 | try { |
| 433 : | jsr166 | 1.22 | task.get(); |
| 434 : | jsr166 | 1.17 | shouldThrow(); |
| 435 : | jsr166 | 1.16 | } catch (ExecutionException success) { |
| 436 : | jsr166 | 1.15 | assertTrue(success.getCause() instanceof ArithmeticException); |
| 437 : | jsr166 | 1.22 | checkCompletedAbnormally(task, success.getCause()); |
| 438 : | dl | 1.1 | } |
| 439 : | } | ||
| 440 : | jsr166 | 1.12 | |
| 441 : | dl | 1.5 | /** |
| 442 : | jsr166 | 1.20 | * A runtime exception in task causes timed get to throw ExecutionException |
| 443 : | dl | 1.5 | */ |
| 444 : | jsr166 | 1.15 | public void testTimedGet_ExecutionException2() throws Exception { |
| 445 : | jsr166 | 1.22 | final FutureTask task = new FutureTask(new Callable() { |
| 446 : | jsr166 | 1.16 | public Object call() { |
| 447 : | jsr166 | 1.15 | return 5/0; |
| 448 : | }}); | ||
| 449 : | |||
| 450 : | jsr166 | 1.22 | task.run(); |
| 451 : | jsr166 | 1.16 | try { |
| 452 : | jsr166 | 1.22 | task.get(SHORT_DELAY_MS, MILLISECONDS); |
| 453 : | jsr166 | 1.17 | shouldThrow(); |
| 454 : | jsr166 | 1.16 | } catch (ExecutionException success) { |
| 455 : | jsr166 | 1.15 | assertTrue(success.getCause() instanceof ArithmeticException); |
| 456 : | jsr166 | 1.22 | checkCompletedAbnormally(task, success.getCause()); |
| 457 : | jsr166 | 1.15 | } |
| 458 : | dl | 1.1 | } |
| 459 : | jsr166 | 1.12 | |
| 460 : | dl | 1.5 | /** |
| 461 : | dl | 1.6 | * Interrupting a waiting get causes it to throw InterruptedException |
| 462 : | dl | 1.5 | */ |
| 463 : | jsr166 | 1.15 | public void testGet_InterruptedException() throws InterruptedException { |
| 464 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(1); |
| 465 : | final FutureTask task = new FutureTask(new NoOpCallable()); | ||
| 466 : | Thread t = newStartedThread(new CheckedInterruptedRunnable() { | ||
| 467 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 468 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 469 : | task.get(); | ||
| 470 : | jsr166 | 1.15 | }}); |
| 471 : | |||
| 472 : | jsr166 | 1.22 | threadStarted.await(); |
| 473 : | jsr166 | 1.15 | t.interrupt(); |
| 474 : | jsr166 | 1.28 | awaitTermination(t); |
| 475 : | jsr166 | 1.22 | checkNotDone(task); |
| 476 : | dl | 1.1 | } |
| 477 : | |||
| 478 : | dl | 1.5 | /** |
| 479 : | jsr166 | 1.20 | * Interrupting a waiting timed get causes it to throw InterruptedException |
| 480 : | dl | 1.5 | */ |
| 481 : | jsr166 | 1.15 | public void testTimedGet_InterruptedException2() throws InterruptedException { |
| 482 : | jsr166 | 1.22 | final CountDownLatch threadStarted = new CountDownLatch(1); |
| 483 : | final FutureTask task = new FutureTask(new NoOpCallable()); | ||
| 484 : | Thread t = newStartedThread(new CheckedInterruptedRunnable() { | ||
| 485 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 486 : | jsr166 | 1.22 | threadStarted.countDown(); |
| 487 : | jsr166 | 1.28 | task.get(2*LONG_DELAY_MS, MILLISECONDS); |
| 488 : | jsr166 | 1.15 | }}); |
| 489 : | |||
| 490 : | jsr166 | 1.22 | threadStarted.await(); |
| 491 : | jsr166 | 1.15 | t.interrupt(); |
| 492 : | jsr166 | 1.28 | awaitTermination(t); |
| 493 : | jsr166 | 1.22 | checkNotDone(task); |
| 494 : | dl | 1.1 | } |
| 495 : | jsr166 | 1.12 | |
| 496 : | dl | 1.5 | /** |
| 497 : | dl | 1.6 | * A timed out timed get throws TimeoutException |
| 498 : | dl | 1.5 | */ |
| 499 : | jsr166 | 1.15 | public void testGet_TimeoutException() throws Exception { |
| 500 : | jsr166 | 1.16 | try { |
| 501 : | jsr166 | 1.22 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 502 : | task.get(1, MILLISECONDS); | ||
| 503 : | jsr166 | 1.17 | shouldThrow(); |
| 504 : | jsr166 | 1.16 | } catch (TimeoutException success) {} |
| 505 : | dl | 1.1 | } |
| 506 : | jsr166 | 1.12 | |
| 507 : | dl | 1.1 | } |
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