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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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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/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.concurrent.*; |
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import java.util.*; |
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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.util.ArrayList; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CancellationException; |
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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.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.FutureTask; |
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import java.util.concurrent.TimeoutException; |
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import java.util.concurrent.atomic.AtomicInteger; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class FutureTaskTest extends JSR166TestCase { |
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|
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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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public static Test suite() { |
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return new TestSuite(FutureTaskTest.class); |
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return new TestSuite(FutureTaskTest.class); |
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} |
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|
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void checkIsDone(Future<?> f) { |
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assertTrue(f.isDone()); |
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assertFalse(f.cancel(false)); |
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assertFalse(f.cancel(true)); |
42 |
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if (f instanceof PublicFutureTask) { |
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PublicFutureTask pf = (PublicFutureTask) f; |
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assertEquals(1, pf.doneCount()); |
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assertFalse(pf.runAndReset()); |
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assertEquals(1, pf.doneCount()); |
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Object r = null; Object exInfo = null; |
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try { |
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r = f.get(); |
50 |
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} catch (CancellationException t) { |
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exInfo = CancellationException.class; |
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} catch (ExecutionException t) { |
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exInfo = t.getCause(); |
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} catch (Throwable t) { |
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threadUnexpectedException(t); |
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} |
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|
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// Check that run and runAndReset have no effect. |
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int savedRunCount = pf.runCount(); |
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pf.run(); |
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pf.runAndReset(); |
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assertEquals(savedRunCount, pf.runCount()); |
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Object r2 = null; |
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try { |
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r2 = f.get(); |
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} catch (CancellationException t) { |
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assertSame(exInfo, CancellationException.class); |
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} catch (ExecutionException t) { |
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assertSame(exInfo, t.getCause()); |
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} catch (Throwable t) { |
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threadUnexpectedException(t); |
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} |
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if (exInfo == null) |
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assertSame(r, r2); |
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assertTrue(f.isDone()); |
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} |
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} |
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|
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void checkNotDone(Future<?> f) { |
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assertFalse(f.isDone()); |
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assertFalse(f.isCancelled()); |
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if (f instanceof PublicFutureTask) { |
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PublicFutureTask pf = (PublicFutureTask) f; |
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assertEquals(0, pf.doneCount()); |
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assertEquals(0, pf.setCount()); |
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assertEquals(0, pf.setExceptionCount()); |
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} |
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} |
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|
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void checkIsRunning(Future<?> f) { |
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checkNotDone(f); |
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if (f instanceof FutureTask) { |
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FutureTask<?> ft = (FutureTask<?>) f; |
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// Check that run methods do nothing |
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ft.run(); |
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if (f instanceof PublicFutureTask) { |
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PublicFutureTask pf = (PublicFutureTask) f; |
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int savedRunCount = pf.runCount(); |
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pf.run(); |
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assertFalse(pf.runAndReset()); |
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assertEquals(savedRunCount, pf.runCount()); |
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} |
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checkNotDone(f); |
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} |
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} |
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|
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<T> void checkCompletedNormally(Future<T> f, T expectedValue) { |
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checkIsDone(f); |
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assertFalse(f.isCancelled()); |
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|
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T v1 = null, v2 = null; |
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try { |
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v1 = f.get(); |
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v2 = f.get(randomTimeout(), randomTimeUnit()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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assertSame(expectedValue, v1); |
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assertSame(expectedValue, v2); |
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} |
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|
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void checkCancelled(Future<?> f) { |
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checkIsDone(f); |
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assertTrue(f.isCancelled()); |
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|
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try { |
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f.get(); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
129 |
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|
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try { |
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f.get(randomTimeout(), randomTimeUnit()); |
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shouldThrow(); |
133 |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
135 |
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} |
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|
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void tryToConfuseDoneTask(PublicFutureTask pf) { |
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pf.set(new Object()); |
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pf.setException(new Error()); |
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for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
141 |
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pf.cancel(mayInterruptIfRunning); |
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} |
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} |
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|
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void checkCompletedAbnormally(Future<?> f, Throwable t) { |
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checkIsDone(f); |
147 |
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assertFalse(f.isCancelled()); |
148 |
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|
149 |
> |
try { |
150 |
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f.get(); |
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shouldThrow(); |
152 |
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} catch (ExecutionException success) { |
153 |
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assertSame(t, success.getCause()); |
154 |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
155 |
> |
|
156 |
> |
try { |
157 |
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f.get(randomTimeout(), randomTimeUnit()); |
158 |
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shouldThrow(); |
159 |
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} catch (ExecutionException success) { |
160 |
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assertSame(t, success.getCause()); |
161 |
> |
} catch (Throwable fail) { threadUnexpectedException(fail); } |
162 |
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} |
163 |
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|
164 |
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/** |
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* Subclass to expose protected methods |
166 |
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*/ |
167 |
< |
static class PublicFutureTask extends FutureTask { |
168 |
< |
public PublicFutureTask(Callable r) { super(r); } |
169 |
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public boolean reset() { return super.reset(); } |
170 |
< |
public void setCancelled() { super.setCancelled(); } |
171 |
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public void setDone() { super.setDone(); } |
172 |
< |
public void set(Object x) { super.set(x); } |
173 |
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public void setException(Throwable t) { super.setException(t); } |
167 |
> |
static class PublicFutureTask extends FutureTask<Object> { |
168 |
> |
private final AtomicInteger runCount; |
169 |
> |
private final AtomicInteger doneCount = new AtomicInteger(0); |
170 |
> |
private final AtomicInteger runAndResetCount = new AtomicInteger(0); |
171 |
> |
private final AtomicInteger setCount = new AtomicInteger(0); |
172 |
> |
private final AtomicInteger setExceptionCount = new AtomicInteger(0); |
173 |
> |
public int runCount() { return runCount.get(); } |
174 |
> |
public int doneCount() { return doneCount.get(); } |
175 |
> |
public int runAndResetCount() { return runAndResetCount.get(); } |
176 |
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public int setCount() { return setCount.get(); } |
177 |
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public int setExceptionCount() { return setExceptionCount.get(); } |
178 |
> |
|
179 |
> |
PublicFutureTask(Runnable runnable) { |
180 |
> |
this(runnable, seven); |
181 |
> |
} |
182 |
> |
PublicFutureTask(Runnable runnable, Object result) { |
183 |
> |
this(runnable, result, new AtomicInteger(0)); |
184 |
> |
} |
185 |
> |
private PublicFutureTask(final Runnable runnable, Object result, |
186 |
> |
final AtomicInteger runCount) { |
187 |
> |
super(new Runnable() { |
188 |
> |
public void run() { |
189 |
> |
runCount.getAndIncrement(); |
190 |
> |
runnable.run(); |
191 |
> |
}}, result); |
192 |
> |
this.runCount = runCount; |
193 |
> |
} |
194 |
> |
PublicFutureTask(Callable<?> callable) { |
195 |
> |
this(callable, new AtomicInteger(0)); |
196 |
> |
} |
197 |
> |
private PublicFutureTask(final Callable<?> callable, |
198 |
> |
final AtomicInteger runCount) { |
199 |
> |
super(new Callable<Object>() { |
200 |
> |
public Object call() throws Exception { |
201 |
> |
runCount.getAndIncrement(); |
202 |
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return callable.call(); |
203 |
> |
}}); |
204 |
> |
this.runCount = runCount; |
205 |
> |
} |
206 |
> |
@Override public void done() { |
207 |
> |
assertTrue(isDone()); |
208 |
> |
doneCount.incrementAndGet(); |
209 |
> |
super.done(); |
210 |
> |
} |
211 |
> |
@Override public boolean runAndReset() { |
212 |
> |
runAndResetCount.incrementAndGet(); |
213 |
> |
return super.runAndReset(); |
214 |
> |
} |
215 |
> |
@Override public void set(Object x) { |
216 |
> |
setCount.incrementAndGet(); |
217 |
> |
super.set(x); |
218 |
> |
} |
219 |
> |
@Override public void setException(Throwable t) { |
220 |
> |
setExceptionCount.incrementAndGet(); |
221 |
> |
super.setException(t); |
222 |
> |
} |
223 |
> |
} |
224 |
> |
|
225 |
> |
class Counter extends CheckedRunnable { |
226 |
> |
final AtomicInteger count = new AtomicInteger(0); |
227 |
> |
public int get() { return count.get(); } |
228 |
> |
public void realRun() { |
229 |
> |
count.getAndIncrement(); |
230 |
> |
} |
231 |
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} |
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|
233 |
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/** |
234 |
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* Creating a future with a null callable throws NPE |
234 |
> |
* creating a future with a null callable throws NullPointerException |
235 |
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*/ |
236 |
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public void testConstructor() { |
237 |
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try { |
238 |
< |
FutureTask task = new FutureTask(null); |
238 |
> |
new FutureTask<Void>(null); |
239 |
|
shouldThrow(); |
240 |
< |
} |
41 |
< |
catch(NullPointerException success) { |
42 |
< |
} |
240 |
> |
} catch (NullPointerException success) {} |
241 |
|
} |
242 |
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|
243 |
|
/** |
244 |
< |
* creating a future with null runnable fails |
244 |
> |
* creating a future with null runnable throws NullPointerException |
245 |
|
*/ |
246 |
|
public void testConstructor2() { |
247 |
|
try { |
248 |
< |
FutureTask task = new FutureTask(null, Boolean.TRUE); |
248 |
> |
new FutureTask<Boolean>(null, Boolean.TRUE); |
249 |
|
shouldThrow(); |
250 |
< |
} |
53 |
< |
catch(NullPointerException success) { |
54 |
< |
} |
250 |
> |
} catch (NullPointerException success) {} |
251 |
|
} |
252 |
|
|
253 |
|
/** |
254 |
|
* isDone is true when a task completes |
255 |
|
*/ |
256 |
|
public void testIsDone() { |
61 |
– |
FutureTask task = new FutureTask( new NoOpCallable()); |
62 |
– |
task.run(); |
63 |
– |
assertTrue(task.isDone()); |
64 |
– |
assertFalse(task.isCancelled()); |
65 |
– |
} |
66 |
– |
|
67 |
– |
/** |
68 |
– |
* reset of a done task succeeds and changes status to not done |
69 |
– |
*/ |
70 |
– |
public void testReset() { |
257 |
|
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
72 |
– |
task.run(); |
73 |
– |
assertTrue(task.isDone()); |
74 |
– |
assertTrue(task.reset()); |
258 |
|
assertFalse(task.isDone()); |
259 |
+ |
task.run(); |
260 |
+ |
assertTrue(task.isDone()); |
261 |
+ |
checkCompletedNormally(task, Boolean.TRUE); |
262 |
+ |
assertEquals(1, task.runCount()); |
263 |
|
} |
264 |
|
|
265 |
|
/** |
266 |
< |
* Resetting after cancellation fails |
80 |
< |
*/ |
81 |
< |
public void testResetAfterCancel() { |
82 |
< |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
83 |
< |
assertTrue(task.cancel(false)); |
84 |
< |
task.run(); |
85 |
< |
assertTrue(task.isDone()); |
86 |
< |
assertTrue(task.isCancelled()); |
87 |
< |
assertFalse(task.reset()); |
88 |
< |
} |
89 |
< |
|
90 |
< |
/** |
91 |
< |
* setDone of new task causes isDone to be true |
266 |
> |
* runAndReset of a non-cancelled task succeeds |
267 |
|
*/ |
268 |
< |
public void testSetDone() { |
268 |
> |
public void testRunAndReset() { |
269 |
|
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
270 |
< |
task.setDone(); |
271 |
< |
assertTrue(task.isDone()); |
272 |
< |
assertFalse(task.isCancelled()); |
270 |
> |
for (int i = 0; i < 3; i++) { |
271 |
> |
assertTrue(task.runAndReset()); |
272 |
> |
checkNotDone(task); |
273 |
> |
assertEquals(i + 1, task.runCount()); |
274 |
> |
assertEquals(i + 1, task.runAndResetCount()); |
275 |
> |
assertEquals(0, task.setCount()); |
276 |
> |
assertEquals(0, task.setExceptionCount()); |
277 |
> |
} |
278 |
|
} |
279 |
|
|
280 |
|
/** |
281 |
< |
* setCancelled of a new task causes isCancelled to be true |
281 |
> |
* runAndReset after cancellation fails |
282 |
|
*/ |
283 |
< |
public void testSetCancelled() { |
284 |
< |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
285 |
< |
assertTrue(task.cancel(false)); |
286 |
< |
task.setCancelled(); |
287 |
< |
assertTrue(task.isDone()); |
288 |
< |
assertTrue(task.isCancelled()); |
283 |
> |
public void testRunAndResetAfterCancel() { |
284 |
> |
for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
285 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
286 |
> |
assertTrue(task.cancel(mayInterruptIfRunning)); |
287 |
> |
for (int i = 0; i < 3; i++) { |
288 |
> |
assertFalse(task.runAndReset()); |
289 |
> |
assertEquals(0, task.runCount()); |
290 |
> |
assertEquals(i + 1, task.runAndResetCount()); |
291 |
> |
assertEquals(0, task.setCount()); |
292 |
> |
assertEquals(0, task.setExceptionCount()); |
293 |
> |
} |
294 |
> |
tryToConfuseDoneTask(task); |
295 |
> |
checkCancelled(task); |
296 |
> |
} |
297 |
|
} |
298 |
|
|
299 |
|
/** |
300 |
< |
* setting value gauses get to return it |
300 |
> |
* setting value causes get to return it |
301 |
|
*/ |
302 |
< |
public void testSet() { |
302 |
> |
public void testSet() throws Exception { |
303 |
|
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
304 |
|
task.set(one); |
305 |
< |
try { |
306 |
< |
assertEquals(task.get(), one); |
307 |
< |
} |
308 |
< |
catch(Exception e) { |
309 |
< |
unexpectedException(); |
310 |
< |
} |
305 |
> |
for (int i = 0; i < 3; i++) { |
306 |
> |
assertSame(one, task.get()); |
307 |
> |
assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS)); |
308 |
> |
assertEquals(1, task.setCount()); |
309 |
> |
} |
310 |
> |
tryToConfuseDoneTask(task); |
311 |
> |
checkCompletedNormally(task, one); |
312 |
> |
assertEquals(0, task.runCount()); |
313 |
|
} |
314 |
|
|
315 |
|
/** |
316 |
|
* setException causes get to throw ExecutionException |
317 |
|
*/ |
318 |
< |
public void testSetException() { |
318 |
> |
public void testSetException_get() throws Exception { |
319 |
|
Exception nse = new NoSuchElementException(); |
320 |
|
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
321 |
|
task.setException(nse); |
322 |
+ |
|
323 |
|
try { |
324 |
< |
Object x = task.get(); |
324 |
> |
task.get(); |
325 |
|
shouldThrow(); |
326 |
+ |
} catch (ExecutionException success) { |
327 |
+ |
assertSame(nse, success.getCause()); |
328 |
+ |
checkCompletedAbnormally(task, nse); |
329 |
|
} |
330 |
< |
catch(ExecutionException ee) { |
331 |
< |
Throwable cause = ee.getCause(); |
332 |
< |
assertEquals(cause, nse); |
333 |
< |
} |
334 |
< |
catch(Exception e) { |
335 |
< |
unexpectedException(); |
330 |
> |
|
331 |
> |
try { |
332 |
> |
task.get(LONG_DELAY_MS, MILLISECONDS); |
333 |
> |
shouldThrow(); |
334 |
> |
} catch (ExecutionException success) { |
335 |
> |
assertSame(nse, success.getCause()); |
336 |
> |
checkCompletedAbnormally(task, nse); |
337 |
|
} |
338 |
+ |
|
339 |
+ |
assertEquals(1, task.setExceptionCount()); |
340 |
+ |
assertEquals(0, task.setCount()); |
341 |
+ |
tryToConfuseDoneTask(task); |
342 |
+ |
checkCompletedAbnormally(task, nse); |
343 |
+ |
assertEquals(0, task.runCount()); |
344 |
|
} |
345 |
|
|
346 |
|
/** |
347 |
< |
* Cancelling before running succeeds |
347 |
> |
* cancel(false) before run succeeds |
348 |
|
*/ |
349 |
|
public void testCancelBeforeRun() { |
350 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
350 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
351 |
|
assertTrue(task.cancel(false)); |
352 |
< |
task.run(); |
353 |
< |
assertTrue(task.isDone()); |
354 |
< |
assertTrue(task.isCancelled()); |
352 |
> |
task.run(); |
353 |
> |
assertEquals(0, task.runCount()); |
354 |
> |
assertEquals(0, task.setCount()); |
355 |
> |
assertEquals(0, task.setExceptionCount()); |
356 |
> |
assertTrue(task.isCancelled()); |
357 |
> |
assertTrue(task.isDone()); |
358 |
> |
tryToConfuseDoneTask(task); |
359 |
> |
assertEquals(0, task.runCount()); |
360 |
> |
checkCancelled(task); |
361 |
|
} |
362 |
|
|
363 |
|
/** |
364 |
< |
* Cancel(true) before run succeeds |
364 |
> |
* cancel(true) before run succeeds |
365 |
|
*/ |
366 |
|
public void testCancelBeforeRun2() { |
367 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
367 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
368 |
|
assertTrue(task.cancel(true)); |
369 |
< |
task.run(); |
370 |
< |
assertTrue(task.isDone()); |
371 |
< |
assertTrue(task.isCancelled()); |
369 |
> |
task.run(); |
370 |
> |
assertEquals(0, task.runCount()); |
371 |
> |
assertEquals(0, task.setCount()); |
372 |
> |
assertEquals(0, task.setExceptionCount()); |
373 |
> |
assertTrue(task.isCancelled()); |
374 |
> |
assertTrue(task.isDone()); |
375 |
> |
tryToConfuseDoneTask(task); |
376 |
> |
assertEquals(0, task.runCount()); |
377 |
> |
checkCancelled(task); |
378 |
|
} |
379 |
|
|
380 |
|
/** |
381 |
< |
* cancel of a completed task fails |
381 |
> |
* cancel(false) of a completed task fails |
382 |
|
*/ |
383 |
|
public void testCancelAfterRun() { |
384 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
385 |
< |
task.run(); |
384 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
385 |
> |
task.run(); |
386 |
|
assertFalse(task.cancel(false)); |
387 |
< |
assertTrue(task.isDone()); |
388 |
< |
assertFalse(task.isCancelled()); |
387 |
> |
assertEquals(1, task.runCount()); |
388 |
> |
assertEquals(1, task.setCount()); |
389 |
> |
assertEquals(0, task.setExceptionCount()); |
390 |
> |
tryToConfuseDoneTask(task); |
391 |
> |
checkCompletedNormally(task, Boolean.TRUE); |
392 |
> |
assertEquals(1, task.runCount()); |
393 |
|
} |
394 |
|
|
395 |
|
/** |
396 |
< |
* cancel(true) interrupts a running task |
396 |
> |
* cancel(true) of a completed task fails |
397 |
> |
*/ |
398 |
> |
public void testCancelAfterRun2() { |
399 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
400 |
> |
task.run(); |
401 |
> |
assertFalse(task.cancel(true)); |
402 |
> |
assertEquals(1, task.runCount()); |
403 |
> |
assertEquals(1, task.setCount()); |
404 |
> |
assertEquals(0, task.setExceptionCount()); |
405 |
> |
tryToConfuseDoneTask(task); |
406 |
> |
checkCompletedNormally(task, Boolean.TRUE); |
407 |
> |
assertEquals(1, task.runCount()); |
408 |
> |
} |
409 |
> |
|
410 |
> |
/** |
411 |
> |
* cancel(true) interrupts a running task that subsequently succeeds |
412 |
|
*/ |
413 |
|
public void testCancelInterrupt() { |
414 |
< |
FutureTask task = new FutureTask( new Callable() { |
415 |
< |
public Object call() { |
414 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
415 |
> |
final PublicFutureTask task = |
416 |
> |
new PublicFutureTask(new CheckedRunnable() { |
417 |
> |
public void realRun() { |
418 |
> |
pleaseCancel.countDown(); |
419 |
|
try { |
420 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
421 |
< |
threadShouldThrow(); |
422 |
< |
} |
423 |
< |
catch (InterruptedException success) {} |
424 |
< |
return Boolean.TRUE; |
425 |
< |
} }); |
426 |
< |
Thread t = new Thread(task); |
420 |
> |
delay(LONG_DELAY_MS); |
421 |
> |
shouldThrow(); |
422 |
> |
} catch (InterruptedException success) {} |
423 |
> |
assertFalse(Thread.interrupted()); |
424 |
> |
}}); |
425 |
> |
|
426 |
> |
Thread t = newStartedThread(task); |
427 |
> |
await(pleaseCancel); |
428 |
> |
assertTrue(task.cancel(true)); |
429 |
> |
assertTrue(task.isCancelled()); |
430 |
> |
assertTrue(task.isDone()); |
431 |
> |
awaitTermination(t); |
432 |
> |
assertEquals(1, task.runCount()); |
433 |
> |
assertEquals(1, task.setCount()); |
434 |
> |
assertEquals(0, task.setExceptionCount()); |
435 |
> |
tryToConfuseDoneTask(task); |
436 |
> |
checkCancelled(task); |
437 |
> |
} |
438 |
> |
|
439 |
> |
/** |
440 |
> |
* cancel(true) tries to interrupt a running task, but |
441 |
> |
* Thread.interrupt throws (simulating a restrictive security |
442 |
> |
* manager) |
443 |
> |
*/ |
444 |
> |
public void testCancelInterrupt_ThrowsSecurityException() { |
445 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
446 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
447 |
> |
final PublicFutureTask task = |
448 |
> |
new PublicFutureTask(new CheckedRunnable() { |
449 |
> |
public void realRun() { |
450 |
> |
pleaseCancel.countDown(); |
451 |
> |
await(cancelled); |
452 |
> |
assertFalse(Thread.interrupted()); |
453 |
> |
}}); |
454 |
> |
|
455 |
> |
final Thread t = new Thread(task) { |
456 |
> |
// Simulate a restrictive security manager. |
457 |
> |
@Override public void interrupt() { |
458 |
> |
throw new SecurityException(); |
459 |
> |
}}; |
460 |
> |
t.setDaemon(true); |
461 |
|
t.start(); |
462 |
< |
|
462 |
> |
|
463 |
> |
await(pleaseCancel); |
464 |
|
try { |
465 |
< |
Thread.sleep(SHORT_DELAY_MS); |
466 |
< |
assertTrue(task.cancel(true)); |
467 |
< |
t.join(); |
468 |
< |
assertTrue(task.isDone()); |
469 |
< |
assertTrue(task.isCancelled()); |
470 |
< |
} catch(InterruptedException e){ |
471 |
< |
unexpectedException(); |
472 |
< |
} |
465 |
> |
task.cancel(true); |
466 |
> |
shouldThrow(); |
467 |
> |
} catch (SecurityException success) {} |
468 |
> |
|
469 |
> |
// We failed to deliver the interrupt, but the world retains |
470 |
> |
// its sanity, as if we had done task.cancel(false) |
471 |
> |
assertTrue(task.isCancelled()); |
472 |
> |
assertTrue(task.isDone()); |
473 |
> |
assertEquals(1, task.runCount()); |
474 |
> |
assertEquals(1, task.doneCount()); |
475 |
> |
assertEquals(0, task.setCount()); |
476 |
> |
assertEquals(0, task.setExceptionCount()); |
477 |
> |
cancelled.countDown(); |
478 |
> |
awaitTermination(t); |
479 |
> |
assertEquals(1, task.setCount()); |
480 |
> |
assertEquals(0, task.setExceptionCount()); |
481 |
> |
tryToConfuseDoneTask(task); |
482 |
> |
checkCancelled(task); |
483 |
|
} |
484 |
|
|
485 |
+ |
/** |
486 |
+ |
* cancel(true) interrupts a running task that subsequently throws |
487 |
+ |
*/ |
488 |
+ |
public void testCancelInterrupt_taskFails() { |
489 |
+ |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
490 |
+ |
final PublicFutureTask task = |
491 |
+ |
new PublicFutureTask(new Runnable() { |
492 |
+ |
public void run() { |
493 |
+ |
pleaseCancel.countDown(); |
494 |
+ |
try { |
495 |
+ |
delay(LONG_DELAY_MS); |
496 |
+ |
threadShouldThrow(); |
497 |
+ |
} catch (InterruptedException success) { |
498 |
+ |
} catch (Throwable t) { threadUnexpectedException(t); } |
499 |
+ |
throw new RuntimeException(); |
500 |
+ |
}}); |
501 |
+ |
|
502 |
+ |
Thread t = newStartedThread(task); |
503 |
+ |
await(pleaseCancel); |
504 |
+ |
assertTrue(task.cancel(true)); |
505 |
+ |
assertTrue(task.isCancelled()); |
506 |
+ |
awaitTermination(t); |
507 |
+ |
assertEquals(1, task.runCount()); |
508 |
+ |
assertEquals(0, task.setCount()); |
509 |
+ |
assertEquals(1, task.setExceptionCount()); |
510 |
+ |
tryToConfuseDoneTask(task); |
511 |
+ |
checkCancelled(task); |
512 |
+ |
} |
513 |
|
|
514 |
|
/** |
515 |
|
* cancel(false) does not interrupt a running task |
516 |
|
*/ |
517 |
|
public void testCancelNoInterrupt() { |
518 |
< |
FutureTask task = new FutureTask( new Callable() { |
519 |
< |
public Object call() { |
520 |
< |
try { |
521 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
522 |
< |
} |
523 |
< |
catch (InterruptedException success) { |
524 |
< |
threadFail("should not interrupt"); |
525 |
< |
} |
518 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
519 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
520 |
> |
final PublicFutureTask task = |
521 |
> |
new PublicFutureTask(new CheckedCallable<Boolean>() { |
522 |
> |
public Boolean realCall() { |
523 |
> |
pleaseCancel.countDown(); |
524 |
> |
await(cancelled); |
525 |
> |
assertFalse(Thread.interrupted()); |
526 |
|
return Boolean.TRUE; |
527 |
< |
} }); |
528 |
< |
Thread t = new Thread(task); |
529 |
< |
t.start(); |
530 |
< |
|
531 |
< |
try { |
532 |
< |
Thread.sleep(SHORT_DELAY_MS); |
533 |
< |
assertTrue(task.cancel(false)); |
534 |
< |
t.join(); |
535 |
< |
assertTrue(task.isDone()); |
536 |
< |
assertTrue(task.isCancelled()); |
537 |
< |
} catch(InterruptedException e){ |
538 |
< |
unexpectedException(); |
539 |
< |
} |
527 |
> |
}}); |
528 |
> |
|
529 |
> |
Thread t = newStartedThread(task); |
530 |
> |
await(pleaseCancel); |
531 |
> |
assertTrue(task.cancel(false)); |
532 |
> |
assertTrue(task.isCancelled()); |
533 |
> |
cancelled.countDown(); |
534 |
> |
awaitTermination(t); |
535 |
> |
assertEquals(1, task.runCount()); |
536 |
> |
assertEquals(1, task.setCount()); |
537 |
> |
assertEquals(0, task.setExceptionCount()); |
538 |
> |
tryToConfuseDoneTask(task); |
539 |
> |
checkCancelled(task); |
540 |
> |
} |
541 |
> |
|
542 |
> |
/** |
543 |
> |
* run in one thread causes get in another thread to retrieve value |
544 |
> |
*/ |
545 |
> |
public void testGetRun() { |
546 |
> |
final CountDownLatch pleaseRun = new CountDownLatch(2); |
547 |
> |
|
548 |
> |
final PublicFutureTask task = |
549 |
> |
new PublicFutureTask(new CheckedCallable<Object>() { |
550 |
> |
public Object realCall() { |
551 |
> |
return two; |
552 |
> |
}}); |
553 |
> |
|
554 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
555 |
> |
public void realRun() throws Exception { |
556 |
> |
pleaseRun.countDown(); |
557 |
> |
assertSame(two, task.get()); |
558 |
> |
}}); |
559 |
> |
|
560 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
561 |
> |
public void realRun() throws Exception { |
562 |
> |
pleaseRun.countDown(); |
563 |
> |
assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); |
564 |
> |
}}); |
565 |
> |
|
566 |
> |
await(pleaseRun); |
567 |
> |
checkNotDone(task); |
568 |
> |
assertTrue(t1.isAlive()); |
569 |
> |
assertTrue(t2.isAlive()); |
570 |
> |
task.run(); |
571 |
> |
checkCompletedNormally(task, two); |
572 |
> |
assertEquals(1, task.runCount()); |
573 |
> |
assertEquals(1, task.setCount()); |
574 |
> |
assertEquals(0, task.setExceptionCount()); |
575 |
> |
awaitTermination(t1); |
576 |
> |
awaitTermination(t2); |
577 |
> |
tryToConfuseDoneTask(task); |
578 |
> |
checkCompletedNormally(task, two); |
579 |
|
} |
580 |
|
|
581 |
|
/** |
582 |
|
* set in one thread causes get in another thread to retrieve value |
583 |
|
*/ |
584 |
< |
public void testGet1() { |
585 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
586 |
< |
public Object call() { |
587 |
< |
try { |
588 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
589 |
< |
} catch(InterruptedException e){ |
590 |
< |
threadUnexpectedException(); |
591 |
< |
} |
592 |
< |
return Boolean.TRUE; |
593 |
< |
} |
594 |
< |
}); |
595 |
< |
Thread t = new Thread(new Runnable() { |
596 |
< |
public void run() { |
597 |
< |
try { |
598 |
< |
ft.get(); |
599 |
< |
} catch(Exception e){ |
600 |
< |
threadUnexpectedException(); |
601 |
< |
} |
602 |
< |
} |
603 |
< |
}); |
604 |
< |
try { |
605 |
< |
assertFalse(ft.isDone()); |
606 |
< |
assertFalse(ft.isCancelled()); |
607 |
< |
t.start(); |
608 |
< |
Thread.sleep(SHORT_DELAY_MS); |
609 |
< |
ft.run(); |
610 |
< |
t.join(); |
611 |
< |
assertTrue(ft.isDone()); |
612 |
< |
assertFalse(ft.isCancelled()); |
613 |
< |
} catch(InterruptedException e){ |
614 |
< |
unexpectedException(); |
615 |
< |
|
616 |
< |
} |
584 |
> |
public void testGetSet() { |
585 |
> |
final CountDownLatch pleaseSet = new CountDownLatch(2); |
586 |
> |
|
587 |
> |
final PublicFutureTask task = |
588 |
> |
new PublicFutureTask(new CheckedCallable<Object>() { |
589 |
> |
public Object realCall() throws InterruptedException { |
590 |
> |
return two; |
591 |
> |
}}); |
592 |
> |
|
593 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
594 |
> |
public void realRun() throws Exception { |
595 |
> |
pleaseSet.countDown(); |
596 |
> |
assertSame(two, task.get()); |
597 |
> |
}}); |
598 |
> |
|
599 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
600 |
> |
public void realRun() throws Exception { |
601 |
> |
pleaseSet.countDown(); |
602 |
> |
assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); |
603 |
> |
}}); |
604 |
> |
|
605 |
> |
await(pleaseSet); |
606 |
> |
checkNotDone(task); |
607 |
> |
assertTrue(t1.isAlive()); |
608 |
> |
assertTrue(t2.isAlive()); |
609 |
> |
task.set(two); |
610 |
> |
assertEquals(0, task.runCount()); |
611 |
> |
assertEquals(1, task.setCount()); |
612 |
> |
assertEquals(0, task.setExceptionCount()); |
613 |
> |
tryToConfuseDoneTask(task); |
614 |
> |
checkCompletedNormally(task, two); |
615 |
> |
awaitTermination(t1); |
616 |
> |
awaitTermination(t2); |
617 |
|
} |
618 |
|
|
619 |
|
/** |
620 |
< |
* set in one thread causes timed get in another thread to retrieve value |
621 |
< |
*/ |
622 |
< |
public void testTimedGet1() { |
623 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
624 |
< |
public Object call() { |
625 |
< |
try { |
626 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
627 |
< |
} catch(InterruptedException e){ |
628 |
< |
threadUnexpectedException(); |
629 |
< |
} |
630 |
< |
return Boolean.TRUE; |
631 |
< |
} |
632 |
< |
}); |
633 |
< |
Thread t = new Thread(new Runnable() { |
634 |
< |
public void run() { |
635 |
< |
try { |
636 |
< |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
637 |
< |
} catch(TimeoutException success) { |
638 |
< |
} catch(Exception e){ |
639 |
< |
threadUnexpectedException(); |
640 |
< |
} |
641 |
< |
} |
642 |
< |
}); |
643 |
< |
try { |
644 |
< |
assertFalse(ft.isDone()); |
645 |
< |
assertFalse(ft.isCancelled()); |
646 |
< |
t.start(); |
647 |
< |
ft.run(); |
648 |
< |
t.join(); |
649 |
< |
assertTrue(ft.isDone()); |
650 |
< |
assertFalse(ft.isCancelled()); |
651 |
< |
} catch(InterruptedException e){ |
652 |
< |
unexpectedException(); |
653 |
< |
|
654 |
< |
} |
620 |
> |
* Cancelling a task causes timed get in another thread to throw |
621 |
> |
* CancellationException |
622 |
> |
*/ |
623 |
> |
public void testTimedGet_Cancellation() { |
624 |
> |
testTimedGet_Cancellation(false); |
625 |
> |
} |
626 |
> |
public void testTimedGet_Cancellation_interrupt() { |
627 |
> |
testTimedGet_Cancellation(true); |
628 |
> |
} |
629 |
> |
public void testTimedGet_Cancellation(final boolean mayInterruptIfRunning) { |
630 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(3); |
631 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
632 |
> |
final Callable<Object> callable = new CheckedCallable<>() { |
633 |
> |
public Object realCall() throws InterruptedException { |
634 |
> |
pleaseCancel.countDown(); |
635 |
> |
if (mayInterruptIfRunning) { |
636 |
> |
try { |
637 |
> |
delay(2*LONG_DELAY_MS); |
638 |
> |
} catch (InterruptedException success) {} |
639 |
> |
} else { |
640 |
> |
await(cancelled); |
641 |
> |
} |
642 |
> |
return two; |
643 |
> |
}}; |
644 |
> |
final PublicFutureTask task = new PublicFutureTask(callable); |
645 |
> |
|
646 |
> |
Thread t1 = new ThreadShouldThrow(CancellationException.class) { |
647 |
> |
public void realRun() throws Exception { |
648 |
> |
pleaseCancel.countDown(); |
649 |
> |
task.get(); |
650 |
> |
}}; |
651 |
> |
Thread t2 = new ThreadShouldThrow(CancellationException.class) { |
652 |
> |
public void realRun() throws Exception { |
653 |
> |
pleaseCancel.countDown(); |
654 |
> |
task.get(2*LONG_DELAY_MS, MILLISECONDS); |
655 |
> |
}}; |
656 |
> |
t1.start(); |
657 |
> |
t2.start(); |
658 |
> |
Thread t3 = newStartedThread(task); |
659 |
> |
await(pleaseCancel); |
660 |
> |
checkIsRunning(task); |
661 |
> |
task.cancel(mayInterruptIfRunning); |
662 |
> |
checkCancelled(task); |
663 |
> |
awaitTermination(t1); |
664 |
> |
awaitTermination(t2); |
665 |
> |
cancelled.countDown(); |
666 |
> |
awaitTermination(t3); |
667 |
> |
assertEquals(1, task.runCount()); |
668 |
> |
assertEquals(1, task.setCount()); |
669 |
> |
assertEquals(0, task.setExceptionCount()); |
670 |
> |
tryToConfuseDoneTask(task); |
671 |
> |
checkCancelled(task); |
672 |
|
} |
673 |
|
|
674 |
|
/** |
675 |
< |
* Cancelling a task causes timed get in another thread to throw CancellationException |
675 |
> |
* A runtime exception in task causes get to throw ExecutionException |
676 |
|
*/ |
677 |
< |
public void testTimedGet_Cancellation() { |
678 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
679 |
< |
public Object call() { |
680 |
< |
try { |
681 |
< |
Thread.sleep(SMALL_DELAY_MS); |
682 |
< |
threadShouldThrow(); |
683 |
< |
} catch(InterruptedException e) { |
684 |
< |
} |
685 |
< |
return Boolean.TRUE; |
686 |
< |
} |
687 |
< |
}); |
688 |
< |
try { |
689 |
< |
Thread t1 = new Thread(new Runnable() { |
690 |
< |
public void run() { |
691 |
< |
try { |
692 |
< |
ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
693 |
< |
threadShouldThrow(); |
694 |
< |
} catch(CancellationException success) {} |
331 |
< |
catch(Exception e){ |
332 |
< |
threadUnexpectedException(); |
333 |
< |
} |
334 |
< |
} |
335 |
< |
}); |
336 |
< |
Thread t2 = new Thread(ft); |
337 |
< |
t1.start(); |
338 |
< |
t2.start(); |
339 |
< |
Thread.sleep(SHORT_DELAY_MS); |
340 |
< |
ft.cancel(true); |
341 |
< |
t1.join(); |
342 |
< |
t2.join(); |
343 |
< |
} catch(InterruptedException ie){ |
344 |
< |
unexpectedException(); |
677 |
> |
public void testGet_ExecutionException() throws InterruptedException { |
678 |
> |
final ArithmeticException e = new ArithmeticException(); |
679 |
> |
final PublicFutureTask task = new PublicFutureTask(new Callable<Object>() { |
680 |
> |
public Object call() { |
681 |
> |
throw e; |
682 |
> |
}}); |
683 |
> |
|
684 |
> |
task.run(); |
685 |
> |
assertEquals(1, task.runCount()); |
686 |
> |
assertEquals(0, task.setCount()); |
687 |
> |
assertEquals(1, task.setExceptionCount()); |
688 |
> |
try { |
689 |
> |
task.get(); |
690 |
> |
shouldThrow(); |
691 |
> |
} catch (ExecutionException success) { |
692 |
> |
assertSame(e, success.getCause()); |
693 |
> |
tryToConfuseDoneTask(task); |
694 |
> |
checkCompletedAbnormally(task, success.getCause()); |
695 |
|
} |
696 |
|
} |
697 |
|
|
698 |
|
/** |
699 |
< |
* Cancelling a task causes get in another thread to throw CancellationException |
700 |
< |
*/ |
701 |
< |
public void testGet_Cancellation() { |
702 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
703 |
< |
public Object call() { |
704 |
< |
try { |
705 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
706 |
< |
threadShouldThrow(); |
707 |
< |
} catch(InterruptedException e){ |
708 |
< |
} |
709 |
< |
return Boolean.TRUE; |
710 |
< |
} |
711 |
< |
}); |
712 |
< |
try { |
713 |
< |
Thread t1 = new Thread(new Runnable() { |
714 |
< |
public void run() { |
715 |
< |
try { |
716 |
< |
ft.get(); |
717 |
< |
threadShouldThrow(); |
718 |
< |
} catch(CancellationException success){ |
719 |
< |
} |
720 |
< |
catch(Exception e){ |
721 |
< |
threadUnexpectedException(); |
722 |
< |
} |
723 |
< |
} |
724 |
< |
}); |
725 |
< |
Thread t2 = new Thread(ft); |
726 |
< |
t1.start(); |
727 |
< |
t2.start(); |
728 |
< |
Thread.sleep(SHORT_DELAY_MS); |
729 |
< |
ft.cancel(true); |
730 |
< |
t1.join(); |
731 |
< |
t2.join(); |
732 |
< |
} catch(InterruptedException success){ |
733 |
< |
unexpectedException(); |
699 |
> |
* A runtime exception in task causes timed get to throw ExecutionException |
700 |
> |
*/ |
701 |
> |
public void testTimedGet_ExecutionException2() throws Exception { |
702 |
> |
final ArithmeticException e = new ArithmeticException(); |
703 |
> |
final PublicFutureTask task = new PublicFutureTask(new Callable<Object>() { |
704 |
> |
public Object call() { |
705 |
> |
throw e; |
706 |
> |
}}); |
707 |
> |
|
708 |
> |
task.run(); |
709 |
> |
try { |
710 |
> |
task.get(LONG_DELAY_MS, MILLISECONDS); |
711 |
> |
shouldThrow(); |
712 |
> |
} catch (ExecutionException success) { |
713 |
> |
assertSame(e, success.getCause()); |
714 |
> |
tryToConfuseDoneTask(task); |
715 |
> |
checkCompletedAbnormally(task, success.getCause()); |
716 |
> |
} |
717 |
> |
} |
718 |
> |
|
719 |
> |
/** |
720 |
> |
* get is interruptible |
721 |
> |
*/ |
722 |
> |
public void testGet_Interruptible() { |
723 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
724 |
> |
final FutureTask<Object> task = new FutureTask<>(new NoOpCallable()); |
725 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
726 |
> |
public void realRun() throws Exception { |
727 |
> |
Thread.currentThread().interrupt(); |
728 |
> |
try { |
729 |
> |
task.get(); |
730 |
> |
shouldThrow(); |
731 |
> |
} catch (InterruptedException success) {} |
732 |
> |
assertFalse(Thread.interrupted()); |
733 |
> |
|
734 |
> |
pleaseInterrupt.countDown(); |
735 |
> |
try { |
736 |
> |
task.get(); |
737 |
> |
shouldThrow(); |
738 |
> |
} catch (InterruptedException success) {} |
739 |
> |
assertFalse(Thread.interrupted()); |
740 |
> |
}}); |
741 |
> |
|
742 |
> |
await(pleaseInterrupt); |
743 |
> |
t.interrupt(); |
744 |
> |
awaitTermination(t); |
745 |
> |
checkNotDone(task); |
746 |
> |
} |
747 |
> |
|
748 |
> |
/** |
749 |
> |
* timed get is interruptible |
750 |
> |
*/ |
751 |
> |
public void testTimedGet_Interruptible() { |
752 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
753 |
> |
final FutureTask<Object> task = new FutureTask<>(new NoOpCallable()); |
754 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
755 |
> |
public void realRun() throws Exception { |
756 |
> |
Thread.currentThread().interrupt(); |
757 |
> |
try { |
758 |
> |
task.get(randomTimeout(), randomTimeUnit()); |
759 |
> |
shouldThrow(); |
760 |
> |
} catch (InterruptedException success) {} |
761 |
> |
assertFalse(Thread.interrupted()); |
762 |
> |
|
763 |
> |
pleaseInterrupt.countDown(); |
764 |
> |
try { |
765 |
> |
task.get(LONGER_DELAY_MS, MILLISECONDS); |
766 |
> |
shouldThrow(); |
767 |
> |
} catch (InterruptedException success) {} |
768 |
> |
assertFalse(Thread.interrupted()); |
769 |
> |
}}); |
770 |
> |
|
771 |
> |
await(pleaseInterrupt); |
772 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
773 |
> |
t.interrupt(); |
774 |
> |
awaitTermination(t); |
775 |
> |
checkNotDone(task); |
776 |
> |
} |
777 |
> |
|
778 |
> |
/** |
779 |
> |
* A timed out timed get throws TimeoutException |
780 |
> |
*/ |
781 |
> |
public void testGet_TimeoutException() throws Exception { |
782 |
> |
FutureTask<Object> task = new FutureTask<>(new NoOpCallable()); |
783 |
> |
long startTime = System.nanoTime(); |
784 |
> |
try { |
785 |
> |
task.get(timeoutMillis(), MILLISECONDS); |
786 |
> |
shouldThrow(); |
787 |
> |
} catch (TimeoutException success) { |
788 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
789 |
|
} |
790 |
|
} |
386 |
– |
|
791 |
|
|
792 |
|
/** |
793 |
< |
* A runtime exception in task causes get to throw ExecutionException |
793 |
> |
* timed get with null TimeUnit throws NullPointerException |
794 |
|
*/ |
795 |
< |
public void testGet_ExecutionException() { |
796 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
797 |
< |
public Object call() { |
798 |
< |
int i = 5/0; |
799 |
< |
return Boolean.TRUE; |
800 |
< |
} |
801 |
< |
}); |
802 |
< |
try { |
803 |
< |
ft.run(); |
804 |
< |
ft.get(); |
805 |
< |
shouldThrow(); |
806 |
< |
} catch(ExecutionException success){ |
807 |
< |
} |
808 |
< |
catch(Exception e){ |
809 |
< |
unexpectedException(); |
810 |
< |
} |
811 |
< |
} |
812 |
< |
|
409 |
< |
/** |
410 |
< |
* A runtime exception in task causes timed get to throw ExecutionException |
411 |
< |
*/ |
412 |
< |
public void testTimedGet_ExecutionException2() { |
413 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
414 |
< |
public Object call() { |
415 |
< |
int i = 5/0; |
416 |
< |
return Boolean.TRUE; |
417 |
< |
} |
418 |
< |
}); |
419 |
< |
try { |
420 |
< |
ft.run(); |
421 |
< |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
422 |
< |
shouldThrow(); |
423 |
< |
} catch(ExecutionException success) { |
424 |
< |
} catch(TimeoutException success) { } // unlikely but OK |
425 |
< |
catch(Exception e){ |
426 |
< |
unexpectedException(); |
427 |
< |
} |
428 |
< |
} |
429 |
< |
|
430 |
< |
|
431 |
< |
/** |
432 |
< |
* Interrupting a waiting get causes it to throw InterruptedException |
433 |
< |
*/ |
434 |
< |
public void testGet_InterruptedException() { |
435 |
< |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
436 |
< |
Thread t = new Thread(new Runnable() { |
437 |
< |
public void run() { |
438 |
< |
try { |
439 |
< |
ft.get(); |
440 |
< |
threadShouldThrow(); |
441 |
< |
} catch(InterruptedException success){ |
442 |
< |
} catch(Exception e){ |
443 |
< |
threadUnexpectedException(); |
444 |
< |
} |
445 |
< |
} |
446 |
< |
}); |
447 |
< |
try { |
448 |
< |
t.start(); |
449 |
< |
Thread.sleep(SHORT_DELAY_MS); |
450 |
< |
t.interrupt(); |
451 |
< |
t.join(); |
452 |
< |
} catch(Exception e){ |
453 |
< |
unexpectedException(); |
454 |
< |
} |
455 |
< |
} |
456 |
< |
|
457 |
< |
/** |
458 |
< |
* Interrupting a waiting timed get causes it to throw InterruptedException |
459 |
< |
*/ |
460 |
< |
public void testTimedGet_InterruptedException2() { |
461 |
< |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
462 |
< |
Thread t = new Thread(new Runnable() { |
463 |
< |
public void run() { |
464 |
< |
try { |
465 |
< |
ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS); |
466 |
< |
threadShouldThrow(); |
467 |
< |
} catch(InterruptedException success){} |
468 |
< |
catch(Exception e){ |
469 |
< |
threadUnexpectedException(); |
470 |
< |
} |
471 |
< |
} |
472 |
< |
}); |
473 |
< |
try { |
474 |
< |
t.start(); |
475 |
< |
Thread.sleep(SHORT_DELAY_MS); |
476 |
< |
t.interrupt(); |
477 |
< |
t.join(); |
478 |
< |
} catch(Exception e){ |
479 |
< |
unexpectedException(); |
795 |
> |
public void testGet_NullTimeUnit() throws Exception { |
796 |
> |
FutureTask<Object> task = new FutureTask<>(new NoOpCallable()); |
797 |
> |
long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE }; |
798 |
> |
|
799 |
> |
for (long timeout : timeouts) { |
800 |
> |
try { |
801 |
> |
task.get(timeout, null); |
802 |
> |
shouldThrow(); |
803 |
> |
} catch (NullPointerException success) {} |
804 |
> |
} |
805 |
> |
|
806 |
> |
task.run(); |
807 |
> |
|
808 |
> |
for (long timeout : timeouts) { |
809 |
> |
try { |
810 |
> |
task.get(timeout, null); |
811 |
> |
shouldThrow(); |
812 |
> |
} catch (NullPointerException success) {} |
813 |
|
} |
814 |
|
} |
815 |
< |
|
815 |
> |
|
816 |
|
/** |
817 |
< |
* A timed out timed get throws TimeoutException |
817 |
> |
* timed get with most negative timeout works correctly (i.e. no |
818 |
> |
* underflow bug) |
819 |
|
*/ |
820 |
< |
public void testGet_TimeoutException() { |
821 |
< |
try { |
822 |
< |
FutureTask ft = new FutureTask(new NoOpCallable()); |
823 |
< |
ft.get(1,TimeUnit.MILLISECONDS); |
824 |
< |
shouldThrow(); |
825 |
< |
} catch(TimeoutException success){} |
826 |
< |
catch(Exception success){ |
827 |
< |
unexpectedException(); |
828 |
< |
} |
820 |
> |
public void testGet_NegativeInfinityTimeout() throws Exception { |
821 |
> |
final ExecutorService pool = Executors.newFixedThreadPool(10); |
822 |
> |
final Runnable nop = new Runnable() { public void run() {}}; |
823 |
> |
final FutureTask<Void> task = new FutureTask<>(nop, null); |
824 |
> |
final List<Future<?>> futures = new ArrayList<>(); |
825 |
> |
Runnable r = new Runnable() { public void run() { |
826 |
> |
for (long timeout : new long[] { 0L, -1L, Long.MIN_VALUE }) { |
827 |
> |
try { |
828 |
> |
task.get(timeout, NANOSECONDS); |
829 |
> |
shouldThrow(); |
830 |
> |
} catch (TimeoutException success) { |
831 |
> |
} catch (Throwable fail) {threadUnexpectedException(fail);}}}}; |
832 |
> |
for (int i = 0; i < 10; i++) |
833 |
> |
futures.add(pool.submit(r)); |
834 |
> |
try { |
835 |
> |
joinPool(pool); |
836 |
> |
for (Future<?> future : futures) |
837 |
> |
checkCompletedNormally(future, null); |
838 |
> |
} finally { |
839 |
> |
task.run(); // last resort to help terminate |
840 |
> |
} |
841 |
|
} |
842 |
< |
|
842 |
> |
|
843 |
> |
/** |
844 |
> |
* toString indicates current completion state |
845 |
> |
*/ |
846 |
> |
public void testToString_incomplete() { |
847 |
> |
FutureTask<String> f = new FutureTask<>(() -> ""); |
848 |
> |
assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]")); |
849 |
> |
if (testImplementationDetails) |
850 |
> |
assertTrue(f.toString().startsWith( |
851 |
> |
identityString(f) + "[Not completed, task =")); |
852 |
> |
} |
853 |
> |
|
854 |
> |
public void testToString_normal() { |
855 |
> |
FutureTask<String> f = new FutureTask<>(() -> ""); |
856 |
> |
f.run(); |
857 |
> |
assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]")); |
858 |
> |
if (testImplementationDetails) |
859 |
> |
assertEquals(identityString(f) + "[Completed normally]", |
860 |
> |
f.toString()); |
861 |
> |
} |
862 |
> |
|
863 |
> |
public void testToString_exception() { |
864 |
> |
FutureTask<String> f = new FutureTask<>( |
865 |
> |
() -> { throw new ArithmeticException(); }); |
866 |
> |
f.run(); |
867 |
> |
assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]")); |
868 |
> |
if (testImplementationDetails) |
869 |
> |
assertTrue(f.toString().startsWith( |
870 |
> |
identityString(f) + "[Completed exceptionally: ")); |
871 |
> |
} |
872 |
> |
|
873 |
> |
public void testToString_cancelled() { |
874 |
> |
for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
875 |
> |
FutureTask<String> f = new FutureTask<>(() -> ""); |
876 |
> |
assertTrue(f.cancel(mayInterruptIfRunning)); |
877 |
> |
assertTrue(f.toString().matches(".*\\[.*Cancelled.*\\]")); |
878 |
> |
if (testImplementationDetails) |
879 |
> |
assertEquals(identityString(f) + "[Cancelled]", |
880 |
> |
f.toString()); |
881 |
> |
} |
882 |
> |
} |
883 |
> |
|
884 |
|
} |