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Revision Log
Revision 1.33 - (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 | 1.32 | import java.security.Permission; |
| 11 : | jsr166 | 1.26 | import java.util.concurrent.Callable; |
| 12 : | import java.util.concurrent.CancellationException; | ||
| 13 : | import java.util.concurrent.CountDownLatch; | ||
| 14 : | import java.util.concurrent.ExecutionException; | ||
| 15 : | import java.util.concurrent.Future; | ||
| 16 : | import java.util.concurrent.FutureTask; | ||
| 17 : | import java.util.concurrent.TimeoutException; | ||
| 18 : | jsr166 | 1.29 | import java.util.concurrent.atomic.AtomicInteger; |
| 19 : | jsr166 | 1.15 | import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 20 : | jsr166 | 1.22 | import static java.util.concurrent.TimeUnit.SECONDS; |
| 21 : | dl | 1.4 | import java.util.*; |
| 22 : | dl | 1.1 | |
| 23 : | dl | 1.4 | public class FutureTaskTest extends JSR166TestCase { |
| 24 : | dl | 1.1 | |
| 25 : | public static void main(String[] args) { | ||
| 26 : | jsr166 | 1.19 | junit.textui.TestRunner.run(suite()); |
| 27 : | dl | 1.1 | } |
| 28 : | public static Test suite() { | ||
| 29 : | jsr166 | 1.16 | return new TestSuite(FutureTaskTest.class); |
| 30 : | dl | 1.1 | } |
| 31 : | |||
| 32 : | jsr166 | 1.29 | void checkIsDone(Future<?> f) { |
| 33 : | assertTrue(f.isDone()); | ||
| 34 : | assertFalse(f.cancel(false)); | ||
| 35 : | assertFalse(f.cancel(true)); | ||
| 36 : | if (f instanceof PublicFutureTask) { | ||
| 37 : | PublicFutureTask pf = (PublicFutureTask) f; | ||
| 38 : | assertEquals(1, pf.doneCount()); | ||
| 39 : | assertFalse(pf.runAndReset()); | ||
| 40 : | assertEquals(1, pf.doneCount()); | ||
| 41 : | |||
| 42 : | // Check that run and runAndReset have no effect. | ||
| 43 : | int savedRunCount = pf.runCount(); | ||
| 44 : | int savedSetCount = pf.setCount(); | ||
| 45 : | int savedSetExceptionCount = pf.setExceptionCount(); | ||
| 46 : | pf.run(); | ||
| 47 : | pf.runAndReset(); | ||
| 48 : | assertEquals(savedRunCount, pf.runCount()); | ||
| 49 : | assertEquals(savedSetCount, pf.setCount()); | ||
| 50 : | assertEquals(savedSetExceptionCount, pf.setExceptionCount()); | ||
| 51 : | assertTrue(f.isDone()); | ||
| 52 : | } | ||
| 53 : | } | ||
| 54 : | |||
| 55 : | jsr166 | 1.22 | void checkNotDone(Future<?> f) { |
| 56 : | assertFalse(f.isDone()); | ||
| 57 : | assertFalse(f.isCancelled()); | ||
| 58 : | jsr166 | 1.29 | if (f instanceof PublicFutureTask) { |
| 59 : | PublicFutureTask pf = (PublicFutureTask) f; | ||
| 60 : | assertEquals(0, pf.doneCount()); | ||
| 61 : | assertEquals(0, pf.setCount()); | ||
| 62 : | assertEquals(0, pf.setExceptionCount()); | ||
| 63 : | } | ||
| 64 : | } | ||
| 65 : | |||
| 66 : | void checkIsRunning(Future<?> f) { | ||
| 67 : | checkNotDone(f); | ||
| 68 : | if (f instanceof FutureTask) { | ||
| 69 : | FutureTask ft = (FutureTask<?>) f; | ||
| 70 : | // Check that run methods do nothing | ||
| 71 : | ft.run(); | ||
| 72 : | if (f instanceof PublicFutureTask) | ||
| 73 : | assertFalse(((PublicFutureTask) f).runAndReset()); | ||
| 74 : | checkNotDone(f); | ||
| 75 : | } | ||
| 76 : | jsr166 | 1.22 | } |
| 77 : | |||
| 78 : | <T> void checkCompletedNormally(Future<T> f, T expected) { | ||
| 79 : | jsr166 | 1.29 | checkIsDone(f); |
| 80 : | jsr166 | 1.22 | assertFalse(f.isCancelled()); |
| 81 : | |||
| 82 : | try { | ||
| 83 : | assertSame(expected, f.get()); | ||
| 84 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 85 : | try { | ||
| 86 : | assertSame(expected, f.get(5L, SECONDS)); | ||
| 87 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 88 : | } | ||
| 89 : | |||
| 90 : | void checkCancelled(Future<?> f) { | ||
| 91 : | jsr166 | 1.29 | checkIsDone(f); |
| 92 : | jsr166 | 1.22 | assertTrue(f.isCancelled()); |
| 93 : | |||
| 94 : | try { | ||
| 95 : | f.get(); | ||
| 96 : | shouldThrow(); | ||
| 97 : | } catch (CancellationException success) { | ||
| 98 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 99 : | |||
| 100 : | try { | ||
| 101 : | f.get(5L, SECONDS); | ||
| 102 : | shouldThrow(); | ||
| 103 : | } catch (CancellationException success) { | ||
| 104 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 105 : | jsr166 | 1.29 | } |
| 106 : | jsr166 | 1.22 | |
| 107 : | jsr166 | 1.29 | void tryToConfuseDoneTask(PublicFutureTask pf) { |
| 108 : | pf.set(new Object()); | ||
| 109 : | pf.setException(new Error()); | ||
| 110 : | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { | ||
| 111 : | pf.cancel(true); | ||
| 112 : | } | ||
| 113 : | jsr166 | 1.22 | } |
| 114 : | |||
| 115 : | void checkCompletedAbnormally(Future<?> f, Throwable t) { | ||
| 116 : | jsr166 | 1.29 | checkIsDone(f); |
| 117 : | jsr166 | 1.22 | assertFalse(f.isCancelled()); |
| 118 : | |||
| 119 : | try { | ||
| 120 : | f.get(); | ||
| 121 : | shouldThrow(); | ||
| 122 : | } catch (ExecutionException success) { | ||
| 123 : | assertSame(t, success.getCause()); | ||
| 124 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 125 : | |||
| 126 : | try { | ||
| 127 : | f.get(5L, SECONDS); | ||
| 128 : | shouldThrow(); | ||
| 129 : | } catch (ExecutionException success) { | ||
| 130 : | assertSame(t, success.getCause()); | ||
| 131 : | } catch (Throwable fail) { threadUnexpectedException(fail); } | ||
| 132 : | } | ||
| 133 : | |||
| 134 : | dl | 1.4 | /** |
| 135 : | * Subclass to expose protected methods | ||
| 136 : | */ | ||
| 137 : | dl | 1.7 | static class PublicFutureTask extends FutureTask { |
| 138 : | jsr166 | 1.29 | private final AtomicInteger runCount; |
| 139 : | private final AtomicInteger doneCount = new AtomicInteger(0); | ||
| 140 : | private final AtomicInteger runAndResetCount = new AtomicInteger(0); | ||
| 141 : | private final AtomicInteger setCount = new AtomicInteger(0); | ||
| 142 : | private final AtomicInteger setExceptionCount = new AtomicInteger(0); | ||
| 143 : | public int runCount() { return runCount.get(); } | ||
| 144 : | public int doneCount() { return doneCount.get(); } | ||
| 145 : | public int runAndResetCount() { return runAndResetCount.get(); } | ||
| 146 : | public int setCount() { return setCount.get(); } | ||
| 147 : | public int setExceptionCount() { return setExceptionCount.get(); } | ||
| 148 : | |||
| 149 : | PublicFutureTask(Runnable runnable) { | ||
| 150 : | this(runnable, seven); | ||
| 151 : | } | ||
| 152 : | PublicFutureTask(Runnable runnable, Object result) { | ||
| 153 : | this(runnable, result, new AtomicInteger(0)); | ||
| 154 : | } | ||
| 155 : | private PublicFutureTask(final Runnable runnable, Object result, | ||
| 156 : | final AtomicInteger runCount) { | ||
| 157 : | super(new Runnable() { | ||
| 158 : | jsr166 | 1.31 | public void run() { |
| 159 : | runCount.getAndIncrement(); | ||
| 160 : | runnable.run(); | ||
| 161 : | }}, result); | ||
| 162 : | jsr166 | 1.29 | this.runCount = runCount; |
| 163 : | } | ||
| 164 : | PublicFutureTask(Callable callable) { | ||
| 165 : | this(callable, new AtomicInteger(0)); | ||
| 166 : | } | ||
| 167 : | private PublicFutureTask(final Callable callable, | ||
| 168 : | final AtomicInteger runCount) { | ||
| 169 : | super(new Callable() { | ||
| 170 : | public Object call() throws Exception { | ||
| 171 : | runCount.getAndIncrement(); | ||
| 172 : | return callable.call(); | ||
| 173 : | }}); | ||
| 174 : | this.runCount = runCount; | ||
| 175 : | } | ||
| 176 : | jsr166 | 1.30 | @Override public void done() { |
| 177 : | jsr166 | 1.29 | assertTrue(isDone()); |
| 178 : | doneCount.incrementAndGet(); | ||
| 179 : | super.done(); | ||
| 180 : | } | ||
| 181 : | jsr166 | 1.30 | @Override public boolean runAndReset() { |
| 182 : | jsr166 | 1.29 | runAndResetCount.incrementAndGet(); |
| 183 : | return super.runAndReset(); | ||
| 184 : | } | ||
| 185 : | jsr166 | 1.30 | @Override public void set(Object x) { |
| 186 : | jsr166 | 1.29 | setCount.incrementAndGet(); |
| 187 : | super.set(x); | ||
| 188 : | } | ||
| 189 : | jsr166 | 1.30 | @Override public void setException(Throwable t) { |
| 190 : | jsr166 | 1.29 | setExceptionCount.incrementAndGet(); |
| 191 : | super.setException(t); | ||
| 192 : | } | ||
| 193 : | } | ||
| 194 : | |||
| 195 : | class Counter extends CheckedRunnable { | ||
| 196 : | final AtomicInteger count = new AtomicInteger(0); | ||
| 197 : | public int get() { return count.get(); } | ||
| 198 : | public void realRun() { | ||
| 199 : | count.getAndIncrement(); | ||
| 200 : | } | ||
| 201 : | dl | 1.4 | } |
| 202 : | dl | 1.1 | |
| 203 : | dl | 1.5 | /** |
| 204 : | jsr166 | 1.29 | * creating a future with a null callable throws NullPointerException |
| 205 : | dl | 1.5 | */ |
| 206 : | public void testConstructor() { | ||
| 207 : | dl | 1.3 | try { |
| 208 : | jsr166 | 1.29 | new FutureTask(null); |
| 209 : | jsr166 | 1.17 | shouldThrow(); |
| 210 : | jsr166 | 1.15 | } catch (NullPointerException success) {} |
| 211 : | dl | 1.3 | } |
| 212 : | |||
| 213 : | dl | 1.5 | /** |
| 214 : | jsr166 | 1.29 | * creating a future with null runnable throws NullPointerException |
| 215 : | dl | 1.5 | */ |
| 216 : | public void testConstructor2() { | ||
| 217 : | dl | 1.3 | try { |
| 218 : | jsr166 | 1.29 | new FutureTask(null, Boolean.TRUE); |
| 219 : | jsr166 | 1.17 | shouldThrow(); |
| 220 : | jsr166 | 1.15 | } catch (NullPointerException success) {} |
| 221 : | dl | 1.3 | } |
| 222 : | |||
| 223 : | dl | 1.5 | /** |
| 224 : | dl | 1.6 | * isDone is true when a task completes |
| 225 : | dl | 1.5 | */ |
| 226 : | public void testIsDone() { | ||
| 227 : | jsr166 | 1.29 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 228 : | assertFalse(task.isDone()); | ||
| 229 : | jsr166 | 1.16 | task.run(); |
| 230 : | assertTrue(task.isDone()); | ||
| 231 : | jsr166 | 1.22 | checkCompletedNormally(task, Boolean.TRUE); |
| 232 : | jsr166 | 1.29 | assertEquals(1, task.runCount()); |
| 233 : | dl | 1.4 | } |
| 234 : | |||
| 235 : | dl | 1.5 | /** |
| 236 : | dl | 1.9 | * runAndReset of a non-cancelled task succeeds |
| 237 : | dl | 1.5 | */ |
| 238 : | dl | 1.9 | public void testRunAndReset() { |
| 239 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 240 : | jsr166 | 1.29 | for (int i = 0; i < 3; i++) { |
| 241 : | assertTrue(task.runAndReset()); | ||
| 242 : | checkNotDone(task); | ||
| 243 : | assertEquals(i+1, task.runCount()); | ||
| 244 : | assertEquals(i+1, task.runAndResetCount()); | ||
| 245 : | assertEquals(0, task.setCount()); | ||
| 246 : | assertEquals(0, task.setExceptionCount()); | ||
| 247 : | } | ||
| 248 : | dl | 1.4 | } |
| 249 : | |||
| 250 : | dl | 1.5 | /** |
| 251 : | dl | 1.9 | * runAndReset after cancellation fails |
| 252 : | dl | 1.5 | */ |
| 253 : | jsr166 | 1.29 | public void testRunAndResetAfterCancel() { |
| 254 : | for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { | ||
| 255 : | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); | ||
| 256 : | assertTrue(task.cancel(mayInterruptIfRunning)); | ||
| 257 : | for (int i = 0; i < 3; i++) { | ||
| 258 : | assertFalse(task.runAndReset()); | ||
| 259 : | assertEquals(0, task.runCount()); | ||
| 260 : | assertEquals(i+1, task.runAndResetCount()); | ||
| 261 : | assertEquals(0, task.setCount()); | ||
| 262 : | assertEquals(0, task.setExceptionCount()); | ||
| 263 : | } | ||
| 264 : | tryToConfuseDoneTask(task); | ||
| 265 : | checkCancelled(task); | ||
| 266 : | } | ||
| 267 : | dl | 1.4 | } |
| 268 : | |||
| 269 : | dl | 1.5 | /** |
| 270 : | dl | 1.11 | * setting value causes get to return it |
| 271 : | dl | 1.5 | */ |
| 272 : | jsr166 | 1.15 | public void testSet() throws Exception { |
| 273 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 274 : | dl | 1.4 | task.set(one); |
| 275 : | jsr166 | 1.29 | for (int i = 0; i < 3; i++) { |
| 276 : | assertSame(one, task.get()); | ||
| 277 : | assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS)); | ||
| 278 : | assertEquals(1, task.setCount()); | ||
| 279 : | } | ||
| 280 : | tryToConfuseDoneTask(task); | ||
| 281 : | jsr166 | 1.22 | checkCompletedNormally(task, one); |
| 282 : | jsr166 | 1.29 | assertEquals(0, task.runCount()); |
| 283 : | dl | 1.4 | } |
| 284 : | |||
| 285 : | dl | 1.5 | /** |
| 286 : | dl | 1.6 | * setException causes get to throw ExecutionException |
| 287 : | dl | 1.5 | */ |
| 288 : | jsr166 | 1.29 | public void testSetException_get() throws Exception { |
| 289 : | dl | 1.4 | Exception nse = new NoSuchElementException(); |
| 290 : | dl | 1.7 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 291 : | dl | 1.4 | task.setException(nse); |
| 292 : | jsr166 | 1.29 | |
| 293 : | try { | ||
| 294 : | task.get(); | ||
| 295 : | shouldThrow(); | ||
| 296 : | } catch (ExecutionException success) { | ||
| 297 : | assertSame(nse, success.getCause()); | ||
| 298 : | checkCompletedAbnormally(task, nse); | ||
| 299 : | } | ||
| 300 : | |||
| 301 : | dl | 1.4 | try { |
| 302 : | jsr166 | 1.29 | task.get(LONG_DELAY_MS, MILLISECONDS); |
| 303 : | jsr166 | 1.17 | shouldThrow(); |
| 304 : | jsr166 | 1.15 | } catch (ExecutionException success) { |
| 305 : | jsr166 | 1.29 | assertSame(nse, success.getCause()); |
| 306 : | jsr166 | 1.22 | checkCompletedAbnormally(task, nse); |
| 307 : | dl | 1.4 | } |
| 308 : | jsr166 | 1.29 | |
| 309 : | assertEquals(1, task.setExceptionCount()); | ||
| 310 : | assertEquals(0, task.setCount()); | ||
| 311 : | tryToConfuseDoneTask(task); | ||
| 312 : | checkCompletedAbnormally(task, nse); | ||
| 313 : | assertEquals(0, task.runCount()); | ||
| 314 : | dl | 1.4 | } |
| 315 : | |||
| 316 : | dl | 1.5 | /** |
| 317 : | jsr166 | 1.29 | * cancel(false) before run succeeds |
| 318 : | dl | 1.5 | */ |
| 319 : | dl | 1.1 | public void testCancelBeforeRun() { |
| 320 : | jsr166 | 1.29 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 321 : | dl | 1.1 | assertTrue(task.cancel(false)); |
| 322 : | jsr166 | 1.16 | task.run(); |
| 323 : | jsr166 | 1.32 | assertEquals(0, task.runCount()); |
| 324 : | jsr166 | 1.29 | assertEquals(0, task.setCount()); |
| 325 : | assertEquals(0, task.setExceptionCount()); | ||
| 326 : | jsr166 | 1.32 | assertTrue(task.isCancelled()); |
| 327 : | assertTrue(task.isDone()); | ||
| 328 : | jsr166 | 1.29 | tryToConfuseDoneTask(task); |
| 329 : | jsr166 | 1.32 | assertEquals(0, task.runCount()); |
| 330 : | jsr166 | 1.22 | checkCancelled(task); |
| 331 : | dl | 1.1 | } |
| 332 : | |||
| 333 : | dl | 1.5 | /** |
| 334 : | jsr166 | 1.29 | * cancel(true) before run succeeds |
| 335 : | dl | 1.5 | */ |
| 336 : | dl | 1.1 | public void testCancelBeforeRun2() { |
| 337 : | jsr166 | 1.29 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 338 : | dl | 1.1 | assertTrue(task.cancel(true)); |
| 339 : | jsr166 | 1.16 | task.run(); |
| 340 : | jsr166 | 1.32 | assertEquals(0, task.runCount()); |
| 341 : | jsr166 | 1.29 | assertEquals(0, task.setCount()); |
| 342 : | assertEquals(0, task.setExceptionCount()); | ||
| 343 : | jsr166 | 1.32 | assertTrue(task.isCancelled()); |
| 344 : | assertTrue(task.isDone()); | ||
| 345 : | jsr166 | 1.29 | tryToConfuseDoneTask(task); |
| 346 : | jsr166 | 1.32 | assertEquals(0, task.runCount()); |
| 347 : | jsr166 | 1.22 | checkCancelled(task); |
| 348 : | dl | 1.1 | } |
| 349 : | |||
| 350 : | dl | 1.5 | /** |
| 351 : | jsr166 | 1.29 | * cancel(false) of a completed task fails |
| 352 : | dl | 1.5 | */ |
| 353 : | dl | 1.1 | public void testCancelAfterRun() { |
| 354 : | jsr166 | 1.29 | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
| 355 : | jsr166 | 1.16 | task.run(); |
| 356 : | dl | 1.1 | assertFalse(task.cancel(false)); |
| 357 : | jsr166 | 1.32 | assertEquals(1, task.runCount()); |
| 358 : | jsr166 | 1.29 | assertEquals(1, task.setCount()); |
| 359 : | assertEquals(0, task.setExceptionCount()); | ||
| 360 : | tryToConfuseDoneTask(task); | ||
| 361 : | checkCompletedNormally(task, Boolean.TRUE); | ||
| 362 : | assertEquals(1, task.runCount()); | ||
| 363 : | } | ||
| 364 : | |||
| 365 : | /** | ||
| 366 : | * cancel(true) of a completed task fails | ||
| 367 : | */ | ||
| 368 : | public void testCancelAfterRun2() { | ||
| 369 : | PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); | ||
| 370 : | task.run(); | ||
| 371 : | assertFalse(task.cancel(true)); | ||
| 372 : | jsr166 | 1.32 | assertEquals(1, task.runCount()); |
| 373 : | jsr166 | 1.29 | assertEquals(1, task.setCount()); |
| 374 : | assertEquals(0, task.setExceptionCount()); | ||
| 375 : | tryToConfuseDoneTask(task); | ||
| 376 : | jsr166 | 1.22 | checkCompletedNormally(task, Boolean.TRUE); |
| 377 : | jsr166 | 1.29 | assertEquals(1, task.runCount()); |
| 378 : | dl | 1.1 | } |
| 379 : | |||
| 380 : | dl | 1.5 | /** |
| 381 : | jsr166 | 1.29 | * cancel(true) interrupts a running task that subsequently succeeds |
| 382 : | dl | 1.5 | */ |
| 383 : | jsr166 | 1.29 | public void testCancelInterrupt() { |
| 384 : | final CountDownLatch pleaseCancel = new CountDownLatch(1); | ||
| 385 : | final PublicFutureTask task = | ||
| 386 : | new PublicFutureTask(new CheckedRunnable() { | ||
| 387 : | public void realRun() { | ||
| 388 : | pleaseCancel.countDown(); | ||
| 389 : | try { | ||
| 390 : | delay(LONG_DELAY_MS); | ||
| 391 : | shouldThrow(); | ||
| 392 : | } catch (InterruptedException success) {} | ||
| 393 : | jsr166 | 1.15 | }}); |
| 394 : | |||
| 395 : | jsr166 | 1.22 | Thread t = newStartedThread(task); |
| 396 : | jsr166 | 1.29 | await(pleaseCancel); |
| 397 : | jsr166 | 1.15 | assertTrue(task.cancel(true)); |
| 398 : | jsr166 | 1.29 | assertTrue(task.isCancelled()); |
| 399 : | jsr166 | 1.32 | assertTrue(task.isDone()); |
| 400 : | jsr166 | 1.29 | awaitTermination(t); |
| 401 : | assertEquals(1, task.runCount()); | ||
| 402 : | assertEquals(1, task.setCount()); | ||
| 403 : | assertEquals(0, task.setExceptionCount()); | ||
| 404 : | tryToConfuseDoneTask(task); | ||
| 405 : | jsr166 | 1.22 | checkCancelled(task); |
| 406 : | jsr166 | 1.29 | } |
| 407 : | |||
| 408 : | /** | ||
| 409 : | jsr166 | 1.33 | * cancel(true) tries to interrupt a running task, but |
| 410 : | * Thread.interrupt throws (simulating a restrictive security | ||
| 411 : | * manager) | ||
| 412 : | jsr166 | 1.32 | */ |
| 413 : | public void testCancelInterrupt_ThrowsSecurityException() { | ||
| 414 : | final CountDownLatch pleaseCancel = new CountDownLatch(1); | ||
| 415 : | final CountDownLatch cancelled = new CountDownLatch(1); | ||
| 416 : | final PublicFutureTask task = | ||
| 417 : | new PublicFutureTask(new CheckedRunnable() { | ||
| 418 : | public void realRun() { | ||
| 419 : | pleaseCancel.countDown(); | ||
| 420 : | await(cancelled); | ||
| 421 : | assertFalse(Thread.interrupted()); | ||
| 422 : | }}); | ||
| 423 : | |||
| 424 : | jsr166 | 1.33 | final Thread t = new Thread(task) { |
| 425 : | // Simulate a restrictive security manager. | ||
| 426 : | @Override public void interrupt() { | ||
| 427 : | throw new SecurityException(); | ||
| 428 : | }}; | ||
| 429 : | t.setDaemon(true); | ||
| 430 : | t.start(); | ||
| 431 : | |||
| 432 : | jsr166 | 1.32 | await(pleaseCancel); |
| 433 : | try { | ||
| 434 : | jsr166 | 1.33 | task.cancel(true); |
| 435 : | shouldThrow(); | ||
| 436 : | } catch (SecurityException expected) {} | ||
| 437 : | |||
| 438 : | // We failed to deliver the interrupt, but the world retains | ||
| 439 : | // its sanity, as if we had done task.cancel(false) | ||
| 440 : | jsr166 | 1.32 | assertTrue(task.isCancelled()); |
| 441 : | assertTrue(task.isDone()); | ||
| 442 : | assertEquals(1, task.runCount()); | ||
| 443 : | assertEquals(1, task.doneCount()); | ||
| 444 : | assertEquals(0, task.setCount()); | ||
| 445 : | assertEquals(0, task.setExceptionCount()); | ||
| 446 : | cancelled.countDown(); | ||
| 447 : | awaitTermination(t); | ||
| 448 : | assertEquals(1, task.setCount()); | ||
| 449 : | assertEquals(0, task.setExceptionCount()); | ||
| 450 : | tryToConfuseDoneTask(task); | ||
| 451 : | checkCancelled(task); | ||
| 452 : | } | ||
| 453 : | |||
| 454 : | /** | ||
| 455 : | jsr166 | 1.29 | * cancel(true) interrupts a running task that subsequently throws |
| 456 : | */ | ||
| 457 : | public void testCancelInterrupt_taskFails() { | ||
| 458 : | final CountDownLatch pleaseCancel = new CountDownLatch(1); | ||
| 459 : | final PublicFutureTask task = | ||
| 460 : | new PublicFutureTask(new Runnable() { | ||
| 461 : | public void run() { | ||
| 462 : | try { | ||
| 463 : | pleaseCancel.countDown(); | ||
| 464 : | delay(LONG_DELAY_MS); | ||
| 465 : | } finally { throw new RuntimeException(); } | ||
| 466 : | }}); | ||
| 467 : | |||
| 468 : | Thread t = newStartedThread(task); | ||
| 469 : | await(pleaseCancel); | ||
| 470 : | assertTrue(task.cancel(true)); | ||
| 471 : | assertTrue(task.isCancelled()); | ||
| 472 : | awaitTermination(t); | ||
| 473 : | assertEquals(1, task.runCount()); | ||
| 474 : | assertEquals(0, task.setCount()); | ||
| 475 : | assertEquals(1, task.setExceptionCount()); | ||
| 476 : | tryToConfuseDoneTask(task); | ||
| 477 : | jsr166 | 1.22 | checkCancelled(task); |
| 478 : | dl | 1.1 | } |
| 479 : | |||
| 480 : | dl | 1.5 | /** |
| 481 : | dl | 1.6 | * cancel(false) does not interrupt a running task |
| 482 : | dl | 1.5 | */ |
| 483 : | jsr166 | 1.29 | public void testCancelNoInterrupt() { |
| 484 : | final CountDownLatch pleaseCancel = new CountDownLatch(1); | ||
| 485 : | jsr166 | 1.22 | final CountDownLatch cancelled = new CountDownLatch(1); |
| 486 : | jsr166 | 1.29 | final PublicFutureTask task = |
| 487 : | new PublicFutureTask(new CheckedCallable<Boolean>() { | ||
| 488 : | public Boolean realCall() { | ||
| 489 : | pleaseCancel.countDown(); | ||
| 490 : | await(cancelled); | ||
| 491 : | jsr166 | 1.22 | assertFalse(Thread.interrupted()); |
| 492 : | dl | 1.1 | return Boolean.TRUE; |
| 493 : | jsr166 | 1.15 | }}); |
| 494 : | |||
| 495 : | jsr166 | 1.22 | Thread t = newStartedThread(task); |
| 496 : | jsr166 | 1.29 | await(pleaseCancel); |
| 497 : | jsr166 | 1.15 | assertTrue(task.cancel(false)); |
| 498 : | jsr166 | 1.29 | assertTrue(task.isCancelled()); |
| 499 : | jsr166 | 1.22 | cancelled.countDown(); |
| 500 : | jsr166 | 1.29 | awaitTermination(t); |
| 501 : | assertEquals(1, task.runCount()); | ||
| 502 : | assertEquals(1, task.setCount()); | ||
| 503 : | assertEquals(0, task.setExceptionCount()); | ||
| 504 : | tryToConfuseDoneTask(task); | ||
| 505 : | jsr166 | 1.22 | checkCancelled(task); |
| 506 : | dl | 1.1 | } |
| 507 : | |||
| 508 : | dl | 1.5 | /** |
| 509 : | jsr166 | 1.23 | * run in one thread causes get in another thread to retrieve value |
| 510 : | dl | 1.5 | */ |
| 511 : | jsr166 | 1.29 | public void testGetRun() { |
| 512 : | final CountDownLatch pleaseRun = new CountDownLatch(2); | ||
| 513 : | jsr166 | 1.23 | |
| 514 : | final PublicFutureTask task = | ||
| 515 : | new PublicFutureTask(new CheckedCallable<Object>() { | ||
| 516 : | jsr166 | 1.29 | public Object realCall() { |
| 517 : | return two; | ||
| 518 : | jsr166 | 1.23 | }}); |
| 519 : | |||
| 520 : | jsr166 | 1.29 | Thread t1 = newStartedThread(new CheckedRunnable() { |
| 521 : | jsr166 | 1.23 | public void realRun() throws Exception { |
| 522 : | jsr166 | 1.29 | pleaseRun.countDown(); |
| 523 : | assertSame(two, task.get()); | ||
| 524 : | jsr166 | 1.23 | }}); |
| 525 : | |||
| 526 : | jsr166 | 1.29 | Thread t2 = newStartedThread(new CheckedRunnable() { |
| 527 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 528 : | jsr166 | 1.29 | pleaseRun.countDown(); |
| 529 : | assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); | ||
| 530 : | jsr166 | 1.15 | }}); |
| 531 : | jsr166 | 1.12 | |
| 532 : | jsr166 | 1.29 | await(pleaseRun); |
| 533 : | jsr166 | 1.23 | checkNotDone(task); |
| 534 : | jsr166 | 1.29 | assertTrue(t1.isAlive()); |
| 535 : | assertTrue(t2.isAlive()); | ||
| 536 : | jsr166 | 1.22 | task.run(); |
| 537 : | jsr166 | 1.29 | checkCompletedNormally(task, two); |
| 538 : | assertEquals(1, task.runCount()); | ||
| 539 : | assertEquals(1, task.setCount()); | ||
| 540 : | assertEquals(0, task.setExceptionCount()); | ||
| 541 : | awaitTermination(t1); | ||
| 542 : | awaitTermination(t2); | ||
| 543 : | tryToConfuseDoneTask(task); | ||
| 544 : | checkCompletedNormally(task, two); | ||
| 545 : | dl | 1.1 | } |
| 546 : | |||
| 547 : | dl | 1.5 | /** |
| 548 : | jsr166 | 1.29 | * set in one thread causes get in another thread to retrieve value |
| 549 : | jsr166 | 1.23 | */ |
| 550 : | jsr166 | 1.29 | public void testGetSet() { |
| 551 : | final CountDownLatch pleaseSet = new CountDownLatch(2); | ||
| 552 : | jsr166 | 1.23 | |
| 553 : | final PublicFutureTask task = | ||
| 554 : | new PublicFutureTask(new CheckedCallable<Object>() { | ||
| 555 : | public Object realCall() throws InterruptedException { | ||
| 556 : | jsr166 | 1.29 | return two; |
| 557 : | jsr166 | 1.23 | }}); |
| 558 : | |||
| 559 : | jsr166 | 1.29 | Thread t1 = newStartedThread(new CheckedRunnable() { |
| 560 : | public void realRun() throws Exception { | ||
| 561 : | pleaseSet.countDown(); | ||
| 562 : | assertSame(two, task.get()); | ||
| 563 : | }}); | ||
| 564 : | |||
| 565 : | Thread t2 = newStartedThread(new CheckedRunnable() { | ||
| 566 : | jsr166 | 1.23 | public void realRun() throws Exception { |
| 567 : | jsr166 | 1.29 | pleaseSet.countDown(); |
| 568 : | assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); | ||
| 569 : | jsr166 | 1.23 | }}); |
| 570 : | |||
| 571 : | jsr166 | 1.29 | await(pleaseSet); |
| 572 : | jsr166 | 1.23 | checkNotDone(task); |
| 573 : | jsr166 | 1.29 | assertTrue(t1.isAlive()); |
| 574 : | assertTrue(t2.isAlive()); | ||
| 575 : | task.set(two); | ||
| 576 : | assertEquals(0, task.runCount()); | ||
| 577 : | assertEquals(1, task.setCount()); | ||
| 578 : | assertEquals(0, task.setExceptionCount()); | ||
| 579 : | tryToConfuseDoneTask(task); | ||
| 580 : | checkCompletedNormally(task, two); | ||
| 581 : | awaitTermination(t1); | ||
| 582 : | awaitTermination(t2); | ||
| 583 : | jsr166 | 1.23 | } |
| 584 : | |||
| 585 : | /** | ||
| 586 : | jsr166 | 1.21 | * Cancelling a task causes timed get in another thread to throw |
| 587 : | * CancellationException | ||
| 588 : | dl | 1.5 | */ |
| 589 : | jsr166 | 1.29 | public void testTimedGet_Cancellation() { |
| 590 : | for (final boolean mayInterruptIfRunning : | ||
| 591 : | new boolean[] { true, false }) { | ||
| 592 : | final CountDownLatch pleaseCancel = new CountDownLatch(3); | ||
| 593 : | final CountDownLatch cancelled = new CountDownLatch(1); | ||
| 594 : | final PublicFutureTask task = | ||
| 595 : | new PublicFutureTask(new CheckedCallable<Object>() { | ||
| 596 : | public Object realCall() throws InterruptedException { | ||
| 597 : | pleaseCancel.countDown(); | ||
| 598 : | if (mayInterruptIfRunning) { | ||
| 599 : | try { | ||
| 600 : | delay(2*LONG_DELAY_MS); | ||
| 601 : | } catch (InterruptedException success) {} | ||
| 602 : | } else { | ||
| 603 : | await(cancelled); | ||
| 604 : | } | ||
| 605 : | return two; | ||
| 606 : | }}); | ||
| 607 : | |||
| 608 : | Thread t1 = new ThreadShouldThrow(CancellationException.class) { | ||
| 609 : | public void realRun() throws Exception { | ||
| 610 : | pleaseCancel.countDown(); | ||
| 611 : | task.get(); | ||
| 612 : | }}; | ||
| 613 : | Thread t2 = new ThreadShouldThrow(CancellationException.class) { | ||
| 614 : | public void realRun() throws Exception { | ||
| 615 : | pleaseCancel.countDown(); | ||
| 616 : | task.get(2*LONG_DELAY_MS, MILLISECONDS); | ||
| 617 : | }}; | ||
| 618 : | t1.start(); | ||
| 619 : | t2.start(); | ||
| 620 : | Thread t3 = newStartedThread(task); | ||
| 621 : | await(pleaseCancel); | ||
| 622 : | checkIsRunning(task); | ||
| 623 : | task.cancel(mayInterruptIfRunning); | ||
| 624 : | checkCancelled(task); | ||
| 625 : | awaitTermination(t1); | ||
| 626 : | awaitTermination(t2); | ||
| 627 : | cancelled.countDown(); | ||
| 628 : | awaitTermination(t3); | ||
| 629 : | assertEquals(1, task.runCount()); | ||
| 630 : | assertEquals(1, task.setCount()); | ||
| 631 : | assertEquals(0, task.setExceptionCount()); | ||
| 632 : | tryToConfuseDoneTask(task); | ||
| 633 : | checkCancelled(task); | ||
| 634 : | } | ||
| 635 : | dl | 1.1 | } |
| 636 : | jsr166 | 1.12 | |
| 637 : | dl | 1.5 | /** |
| 638 : | dl | 1.6 | * A runtime exception in task causes get to throw ExecutionException |
| 639 : | dl | 1.5 | */ |
| 640 : | jsr166 | 1.15 | public void testGet_ExecutionException() throws InterruptedException { |
| 641 : | jsr166 | 1.29 | final ArithmeticException e = new ArithmeticException(); |
| 642 : | final PublicFutureTask task = new PublicFutureTask(new Callable() { | ||
| 643 : | jsr166 | 1.16 | public Object call() { |
| 644 : | jsr166 | 1.29 | throw e; |
| 645 : | jsr166 | 1.15 | }}); |
| 646 : | |||
| 647 : | jsr166 | 1.22 | task.run(); |
| 648 : | jsr166 | 1.29 | assertEquals(1, task.runCount()); |
| 649 : | assertEquals(0, task.setCount()); | ||
| 650 : | assertEquals(1, task.setExceptionCount()); | ||
| 651 : | jsr166 | 1.15 | try { |
| 652 : | jsr166 | 1.22 | task.get(); |
| 653 : | jsr166 | 1.17 | shouldThrow(); |
| 654 : | jsr166 | 1.16 | } catch (ExecutionException success) { |
| 655 : | jsr166 | 1.29 | assertSame(e, success.getCause()); |
| 656 : | tryToConfuseDoneTask(task); | ||
| 657 : | jsr166 | 1.22 | checkCompletedAbnormally(task, success.getCause()); |
| 658 : | dl | 1.1 | } |
| 659 : | } | ||
| 660 : | jsr166 | 1.12 | |
| 661 : | dl | 1.5 | /** |
| 662 : | jsr166 | 1.20 | * A runtime exception in task causes timed get to throw ExecutionException |
| 663 : | dl | 1.5 | */ |
| 664 : | jsr166 | 1.15 | public void testTimedGet_ExecutionException2() throws Exception { |
| 665 : | jsr166 | 1.29 | final ArithmeticException e = new ArithmeticException(); |
| 666 : | final PublicFutureTask task = new PublicFutureTask(new Callable() { | ||
| 667 : | jsr166 | 1.16 | public Object call() { |
| 668 : | jsr166 | 1.29 | throw e; |
| 669 : | jsr166 | 1.15 | }}); |
| 670 : | |||
| 671 : | jsr166 | 1.22 | task.run(); |
| 672 : | jsr166 | 1.16 | try { |
| 673 : | jsr166 | 1.29 | task.get(LONG_DELAY_MS, MILLISECONDS); |
| 674 : | jsr166 | 1.17 | shouldThrow(); |
| 675 : | jsr166 | 1.16 | } catch (ExecutionException success) { |
| 676 : | jsr166 | 1.29 | assertSame(e, success.getCause()); |
| 677 : | tryToConfuseDoneTask(task); | ||
| 678 : | jsr166 | 1.22 | checkCompletedAbnormally(task, success.getCause()); |
| 679 : | jsr166 | 1.15 | } |
| 680 : | dl | 1.1 | } |
| 681 : | jsr166 | 1.12 | |
| 682 : | dl | 1.5 | /** |
| 683 : | jsr166 | 1.29 | * get is interruptible |
| 684 : | dl | 1.5 | */ |
| 685 : | jsr166 | 1.29 | public void testGet_interruptible() { |
| 686 : | final CountDownLatch pleaseInterrupt = new CountDownLatch(1); | ||
| 687 : | jsr166 | 1.22 | final FutureTask task = new FutureTask(new NoOpCallable()); |
| 688 : | jsr166 | 1.29 | Thread t = newStartedThread(new CheckedRunnable() { |
| 689 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 690 : | jsr166 | 1.29 | Thread.currentThread().interrupt(); |
| 691 : | try { | ||
| 692 : | task.get(); | ||
| 693 : | shouldThrow(); | ||
| 694 : | } catch (InterruptedException success) {} | ||
| 695 : | assertFalse(Thread.interrupted()); | ||
| 696 : | |||
| 697 : | pleaseInterrupt.countDown(); | ||
| 698 : | try { | ||
| 699 : | task.get(); | ||
| 700 : | shouldThrow(); | ||
| 701 : | } catch (InterruptedException success) {} | ||
| 702 : | assertFalse(Thread.interrupted()); | ||
| 703 : | jsr166 | 1.15 | }}); |
| 704 : | |||
| 705 : | jsr166 | 1.29 | await(pleaseInterrupt); |
| 706 : | jsr166 | 1.15 | t.interrupt(); |
| 707 : | jsr166 | 1.28 | awaitTermination(t); |
| 708 : | jsr166 | 1.22 | checkNotDone(task); |
| 709 : | dl | 1.1 | } |
| 710 : | |||
| 711 : | dl | 1.5 | /** |
| 712 : | jsr166 | 1.29 | * timed get is interruptible |
| 713 : | dl | 1.5 | */ |
| 714 : | jsr166 | 1.29 | public void testTimedGet_interruptible() { |
| 715 : | final CountDownLatch pleaseInterrupt = new CountDownLatch(1); | ||
| 716 : | jsr166 | 1.22 | final FutureTask task = new FutureTask(new NoOpCallable()); |
| 717 : | jsr166 | 1.29 | Thread t = newStartedThread(new CheckedRunnable() { |
| 718 : | jsr166 | 1.15 | public void realRun() throws Exception { |
| 719 : | jsr166 | 1.29 | Thread.currentThread().interrupt(); |
| 720 : | try { | ||
| 721 : | task.get(2*LONG_DELAY_MS, MILLISECONDS); | ||
| 722 : | shouldThrow(); | ||
| 723 : | } catch (InterruptedException success) {} | ||
| 724 : | assertFalse(Thread.interrupted()); | ||
| 725 : | |||
| 726 : | pleaseInterrupt.countDown(); | ||
| 727 : | try { | ||
| 728 : | task.get(2*LONG_DELAY_MS, MILLISECONDS); | ||
| 729 : | shouldThrow(); | ||
| 730 : | } catch (InterruptedException success) {} | ||
| 731 : | assertFalse(Thread.interrupted()); | ||
| 732 : | jsr166 | 1.15 | }}); |
| 733 : | |||
| 734 : | jsr166 | 1.29 | await(pleaseInterrupt); |
| 735 : | jsr166 | 1.15 | t.interrupt(); |
| 736 : | jsr166 | 1.28 | awaitTermination(t); |
| 737 : | jsr166 | 1.22 | checkNotDone(task); |
| 738 : | dl | 1.1 | } |
| 739 : | jsr166 | 1.12 | |
| 740 : | dl | 1.5 | /** |
| 741 : | dl | 1.6 | * A timed out timed get throws TimeoutException |
| 742 : | dl | 1.5 | */ |
| 743 : | jsr166 | 1.15 | public void testGet_TimeoutException() throws Exception { |
| 744 : | jsr166 | 1.29 | FutureTask task = new FutureTask(new NoOpCallable()); |
| 745 : | long startTime = System.nanoTime(); | ||
| 746 : | jsr166 | 1.16 | try { |
| 747 : | jsr166 | 1.29 | task.get(timeoutMillis(), MILLISECONDS); |
| 748 : | jsr166 | 1.17 | shouldThrow(); |
| 749 : | jsr166 | 1.29 | } catch (TimeoutException success) { |
| 750 : | assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); | ||
| 751 : | } | ||
| 752 : | } | ||
| 753 : | |||
| 754 : | /** | ||
| 755 : | * timed get with null TimeUnit throws NullPointerException | ||
| 756 : | */ | ||
| 757 : | public void testGet_NullTimeUnit() throws Exception { | ||
| 758 : | FutureTask task = new FutureTask(new NoOpCallable()); | ||
| 759 : | long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE }; | ||
| 760 : | |||
| 761 : | for (long timeout : timeouts) { | ||
| 762 : | try { | ||
| 763 : | task.get(timeout, null); | ||
| 764 : | shouldThrow(); | ||
| 765 : | } catch (NullPointerException success) {} | ||
| 766 : | } | ||
| 767 : | |||
| 768 : | task.run(); | ||
| 769 : | |||
| 770 : | for (long timeout : timeouts) { | ||
| 771 : | try { | ||
| 772 : | task.get(timeout, null); | ||
| 773 : | shouldThrow(); | ||
| 774 : | } catch (NullPointerException success) {} | ||
| 775 : | } | ||
| 776 : | dl | 1.1 | } |
| 777 : | jsr166 | 1.12 | |
| 778 : | dl | 1.1 | } |
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