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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/licenses/publicdomain |
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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.*; |
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import java.util.concurrent.*; |
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import java.util.concurrent.locks.*; |
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import java.util.concurrent.atomic.*; |
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|
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public class CyclicBarrierTest extends JSR166TestCase{ |
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public class CyclicBarrierTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(CyclicBarrierTest.class); |
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private class MyAction implements Runnable { |
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public void run() { ++countAction; } |
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} |
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|
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|
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/** |
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* Creating with negative parties throws IAE |
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*/ |
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try { |
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new CyclicBarrier(-1, (Runnable)null); |
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shouldThrow(); |
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} catch(IllegalArgumentException e){} |
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} catch (IllegalArgumentException e) {} |
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} |
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|
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/** |
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try { |
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new CyclicBarrier(-1); |
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shouldThrow(); |
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} catch(IllegalArgumentException e){} |
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} catch (IllegalArgumentException e) {} |
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} |
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|
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/** |
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} |
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|
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/** |
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* A 1-party barrier triggers properly |
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* A 1-party barrier triggers after single await |
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*/ |
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public void testSingleParty() { |
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try { |
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b.await(); |
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assertEquals(0, b.getNumberWaiting()); |
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} |
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catch(Exception e) { |
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catch (Exception e) { |
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unexpectedException(); |
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} |
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} |
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|
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|
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/** |
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* The supplied barrier action is run at barrier |
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*/ |
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assertEquals(0, b.getNumberWaiting()); |
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assertEquals(countAction, 2); |
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} |
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catch(Exception e) { |
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catch (Exception e) { |
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unexpectedException(); |
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} |
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} |
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|
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/** |
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* A 2-party/thread barrier triggers properly |
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* A 2-party/thread barrier triggers after both threads invoke await |
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*/ |
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public void testTwoParties() { |
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final CyclicBarrier b = new CyclicBarrier(2); |
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b.await(); |
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b.await(); |
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b.await(); |
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} catch(Exception e){ |
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} catch (Exception e) { |
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threadUnexpectedException(); |
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}}}); |
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|
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b.await(); |
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b.await(); |
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t.join(); |
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} catch(Exception e){ |
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} catch (Exception e) { |
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unexpectedException(); |
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} |
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} |
130 |
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try { |
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c.await(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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catch(Exception b){ |
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} catch (InterruptedException success) {} |
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catch (Exception b) { |
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threadUnexpectedException(); |
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} |
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} |
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public void run() { |
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try { |
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c.await(); |
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threadShouldThrow(); |
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} catch(BrokenBarrierException success){ |
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} catch(Exception i){ |
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threadShouldThrow(); |
144 |
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} catch (BrokenBarrierException success) { |
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} catch (Exception i) { |
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threadUnexpectedException(); |
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} |
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} |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t1.interrupt(); |
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t1.join(); |
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t1.join(); |
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t2.join(); |
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} catch(InterruptedException e){ |
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} catch (InterruptedException e) { |
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unexpectedException(); |
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} |
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} |
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* throw BrokenBarrierException |
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*/ |
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public void testAwait2_Interrupted_BrokenBarrier() { |
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final CyclicBarrier c = new CyclicBarrier(3); |
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final CyclicBarrier c = new CyclicBarrier(3); |
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Thread t1 = new Thread(new Runnable() { |
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public void run() { |
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try { |
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c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
171 |
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c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadShouldThrow(); |
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} catch(InterruptedException success){ |
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} catch(Exception b){ |
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} catch (InterruptedException success) { |
174 |
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} catch (Exception b) { |
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threadUnexpectedException(); |
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} |
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} |
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Thread t2 = new Thread(new Runnable() { |
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public void run() { |
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try { |
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c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
183 |
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threadShouldThrow(); |
184 |
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} catch(BrokenBarrierException success){ |
185 |
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} catch(Exception i){ |
182 |
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c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
183 |
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threadShouldThrow(); |
184 |
> |
} catch (BrokenBarrierException success) { |
185 |
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} catch (Exception i) { |
186 |
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threadUnexpectedException(); |
187 |
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} |
188 |
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} |
192 |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
194 |
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t1.interrupt(); |
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t1.join(); |
195 |
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t1.join(); |
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t2.join(); |
197 |
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} catch(InterruptedException e){ |
197 |
> |
} catch (InterruptedException e) { |
198 |
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unexpectedException(); |
199 |
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} |
200 |
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} |
201 |
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|
201 |
> |
|
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/** |
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* A timeout in timed await throws TimeoutException |
204 |
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*/ |
209 |
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try { |
210 |
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c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
211 |
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threadShouldThrow(); |
212 |
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} catch(TimeoutException success){ |
213 |
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} catch(Exception b){ |
212 |
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} catch (TimeoutException success) { |
213 |
> |
} catch (Exception b) { |
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threadUnexpectedException(); |
215 |
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|
215 |
> |
|
216 |
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} |
217 |
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} |
218 |
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}); |
219 |
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try { |
220 |
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t.start(); |
221 |
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t.join(); |
222 |
< |
} catch(InterruptedException e){ |
221 |
> |
t.join(); |
222 |
> |
} catch (InterruptedException e) { |
223 |
> |
unexpectedException(); |
224 |
> |
} |
225 |
> |
} |
226 |
> |
|
227 |
> |
/** |
228 |
> |
* A timeout in one party causes others waiting in timed await to |
229 |
> |
* throw BrokenBarrierException |
230 |
> |
*/ |
231 |
> |
public void testAwait4_Timeout_BrokenBarrier() { |
232 |
> |
final CyclicBarrier c = new CyclicBarrier(3); |
233 |
> |
Thread t1 = new Thread(new Runnable() { |
234 |
> |
public void run() { |
235 |
> |
try { |
236 |
> |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
237 |
> |
threadShouldThrow(); |
238 |
> |
} catch (TimeoutException success) { |
239 |
> |
} catch (Exception b) { |
240 |
> |
threadUnexpectedException(); |
241 |
> |
} |
242 |
> |
} |
243 |
> |
}); |
244 |
> |
Thread t2 = new Thread(new Runnable() { |
245 |
> |
public void run() { |
246 |
> |
try { |
247 |
> |
c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
248 |
> |
threadShouldThrow(); |
249 |
> |
} catch (BrokenBarrierException success) { |
250 |
> |
} catch (Exception i) { |
251 |
> |
threadUnexpectedException(); |
252 |
> |
} |
253 |
> |
} |
254 |
> |
}); |
255 |
> |
try { |
256 |
> |
t1.start(); |
257 |
> |
t2.start(); |
258 |
> |
t1.join(); |
259 |
> |
t2.join(); |
260 |
> |
} catch (InterruptedException e) { |
261 |
|
unexpectedException(); |
262 |
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} |
263 |
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} |
264 |
< |
|
264 |
> |
|
265 |
> |
/** |
266 |
> |
* A timeout in one party causes others waiting in await to |
267 |
> |
* throw BrokenBarrierException |
268 |
> |
*/ |
269 |
> |
public void testAwait5_Timeout_BrokenBarrier() { |
270 |
> |
final CyclicBarrier c = new CyclicBarrier(3); |
271 |
> |
Thread t1 = new Thread(new Runnable() { |
272 |
> |
public void run() { |
273 |
> |
try { |
274 |
> |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
275 |
> |
threadShouldThrow(); |
276 |
> |
} catch (TimeoutException success) { |
277 |
> |
} catch (Exception b) { |
278 |
> |
threadUnexpectedException(); |
279 |
> |
} |
280 |
> |
} |
281 |
> |
}); |
282 |
> |
Thread t2 = new Thread(new Runnable() { |
283 |
> |
public void run() { |
284 |
> |
try { |
285 |
> |
c.await(); |
286 |
> |
threadShouldThrow(); |
287 |
> |
} catch (BrokenBarrierException success) { |
288 |
> |
} catch (Exception i) { |
289 |
> |
threadUnexpectedException(); |
290 |
> |
} |
291 |
> |
} |
292 |
> |
}); |
293 |
> |
try { |
294 |
> |
t1.start(); |
295 |
> |
t2.start(); |
296 |
> |
t1.join(); |
297 |
> |
t2.join(); |
298 |
> |
} catch (InterruptedException e) { |
299 |
> |
unexpectedException(); |
300 |
> |
} |
301 |
> |
} |
302 |
> |
|
303 |
|
/** |
304 |
|
* A reset of an active barrier causes waiting threads to throw |
305 |
|
* BrokenBarrierException |
311 |
|
try { |
312 |
|
c.await(); |
313 |
|
threadShouldThrow(); |
314 |
< |
} catch(BrokenBarrierException success){} |
315 |
< |
catch(Exception b){ |
314 |
> |
} catch (BrokenBarrierException success) {} |
315 |
> |
catch (Exception b) { |
316 |
|
threadUnexpectedException(); |
317 |
|
} |
318 |
|
} |
321 |
|
public void run() { |
322 |
|
try { |
323 |
|
c.await(); |
324 |
< |
threadShouldThrow(); |
325 |
< |
} catch(BrokenBarrierException success){ |
326 |
< |
} catch(Exception i){ |
324 |
> |
threadShouldThrow(); |
325 |
> |
} catch (BrokenBarrierException success) { |
326 |
> |
} catch (Exception i) { |
327 |
|
threadUnexpectedException(); |
328 |
|
} |
329 |
|
} |
333 |
|
t2.start(); |
334 |
|
Thread.sleep(SHORT_DELAY_MS); |
335 |
|
c.reset(); |
336 |
< |
t1.join(); |
336 |
> |
t1.join(); |
337 |
|
t2.join(); |
338 |
< |
} catch(InterruptedException e){ |
338 |
> |
} catch (InterruptedException e) { |
339 |
|
unexpectedException(); |
340 |
|
} |
341 |
|
} |
350 |
|
public void run() { |
351 |
|
try { |
352 |
|
c.await(); |
353 |
< |
} catch(Exception b){ |
353 |
> |
} catch (Exception b) { |
354 |
|
threadUnexpectedException(); |
355 |
|
} |
356 |
|
} |
359 |
|
public void run() { |
360 |
|
try { |
361 |
|
c.await(); |
362 |
< |
} catch(Exception i){ |
362 |
> |
} catch (Exception i) { |
363 |
|
threadUnexpectedException(); |
364 |
|
} |
365 |
|
} |
369 |
|
t1.start(); |
370 |
|
t2.start(); |
371 |
|
c.await(); |
372 |
< |
t1.join(); |
372 |
> |
t1.join(); |
373 |
|
t2.join(); |
374 |
< |
} catch(Exception e){ |
374 |
> |
} catch (Exception e) { |
375 |
|
unexpectedException(); |
376 |
|
} |
377 |
|
} |
378 |
|
|
379 |
+ |
/** |
380 |
+ |
* All threads block while a barrier is broken. |
381 |
+ |
*/ |
382 |
+ |
public void testReset_Leakage() { |
383 |
+ |
try { |
384 |
+ |
final CyclicBarrier c = new CyclicBarrier(2); |
385 |
+ |
final AtomicBoolean done = new AtomicBoolean(); |
386 |
+ |
Thread t = new Thread() { |
387 |
+ |
public void run() { |
388 |
+ |
while (!done.get()) { |
389 |
+ |
try { |
390 |
+ |
while (c.isBroken()) |
391 |
+ |
c.reset(); |
392 |
+ |
|
393 |
+ |
c.await(); |
394 |
+ |
threadFail("await should not return"); |
395 |
+ |
} |
396 |
+ |
catch (BrokenBarrierException e) { |
397 |
+ |
} |
398 |
+ |
catch (InterruptedException ie) { |
399 |
+ |
} |
400 |
+ |
} |
401 |
+ |
} |
402 |
+ |
}; |
403 |
+ |
|
404 |
+ |
t.start(); |
405 |
+ |
for ( int i = 0; i < 4; i++) { |
406 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
407 |
+ |
t.interrupt(); |
408 |
+ |
} |
409 |
+ |
done.set(true); |
410 |
+ |
t.interrupt(); |
411 |
+ |
} |
412 |
+ |
catch (Exception ex) { |
413 |
+ |
unexpectedException(); |
414 |
+ |
} |
415 |
+ |
} |
416 |
+ |
|
417 |
+ |
/** |
418 |
+ |
* Reset of a non-broken barrier does not break barrier |
419 |
+ |
*/ |
420 |
+ |
public void testResetWithoutBreakage() { |
421 |
+ |
try { |
422 |
+ |
final CyclicBarrier start = new CyclicBarrier(3); |
423 |
+ |
final CyclicBarrier barrier = new CyclicBarrier(3); |
424 |
+ |
for (int i = 0; i < 3; i++) { |
425 |
+ |
Thread t1 = new Thread(new Runnable() { |
426 |
+ |
public void run() { |
427 |
+ |
try { start.await(); } |
428 |
+ |
catch (Exception ie) { |
429 |
+ |
threadFail("start barrier"); |
430 |
+ |
} |
431 |
+ |
try { barrier.await(); } |
432 |
+ |
catch (Throwable thrown) { |
433 |
+ |
unexpectedException(); |
434 |
+ |
}}}); |
435 |
+ |
|
436 |
+ |
Thread t2 = new Thread(new Runnable() { |
437 |
+ |
public void run() { |
438 |
+ |
try { start.await(); } |
439 |
+ |
catch (Exception ie) { |
440 |
+ |
threadFail("start barrier"); |
441 |
+ |
} |
442 |
+ |
try { barrier.await(); } |
443 |
+ |
catch (Throwable thrown) { |
444 |
+ |
unexpectedException(); |
445 |
+ |
}}}); |
446 |
+ |
|
447 |
+ |
|
448 |
+ |
t1.start(); |
449 |
+ |
t2.start(); |
450 |
+ |
try { start.await(); } |
451 |
+ |
catch (Exception ie) { threadFail("start barrier"); } |
452 |
+ |
barrier.await(); |
453 |
+ |
t1.join(); |
454 |
+ |
t2.join(); |
455 |
+ |
assertFalse(barrier.isBroken()); |
456 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
457 |
+ |
if (i == 1) barrier.reset(); |
458 |
+ |
assertFalse(barrier.isBroken()); |
459 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
460 |
+ |
} |
461 |
+ |
} |
462 |
+ |
catch (Exception ex) { |
463 |
+ |
unexpectedException(); |
464 |
+ |
} |
465 |
+ |
} |
466 |
+ |
|
467 |
+ |
/** |
468 |
+ |
* Reset of a barrier after interruption reinitializes it. |
469 |
+ |
*/ |
470 |
+ |
public void testResetAfterInterrupt() { |
471 |
+ |
try { |
472 |
+ |
final CyclicBarrier start = new CyclicBarrier(3); |
473 |
+ |
final CyclicBarrier barrier = new CyclicBarrier(3); |
474 |
+ |
for (int i = 0; i < 2; i++) { |
475 |
+ |
Thread t1 = new Thread(new Runnable() { |
476 |
+ |
public void run() { |
477 |
+ |
try { start.await(); } |
478 |
+ |
catch (Exception ie) { |
479 |
+ |
threadFail("start barrier"); |
480 |
+ |
} |
481 |
+ |
try { barrier.await(); } |
482 |
+ |
catch (InterruptedException ok) {} |
483 |
+ |
catch (Throwable thrown) { |
484 |
+ |
unexpectedException(); |
485 |
+ |
}}}); |
486 |
+ |
|
487 |
+ |
Thread t2 = new Thread(new Runnable() { |
488 |
+ |
public void run() { |
489 |
+ |
try { start.await(); } |
490 |
+ |
catch (Exception ie) { |
491 |
+ |
threadFail("start barrier"); |
492 |
+ |
} |
493 |
+ |
try { barrier.await(); } |
494 |
+ |
catch (BrokenBarrierException ok) {} |
495 |
+ |
catch (Throwable thrown) { |
496 |
+ |
unexpectedException(); |
497 |
+ |
}}}); |
498 |
+ |
|
499 |
+ |
t1.start(); |
500 |
+ |
t2.start(); |
501 |
+ |
try { start.await(); } |
502 |
+ |
catch (Exception ie) { threadFail("start barrier"); } |
503 |
+ |
t1.interrupt(); |
504 |
+ |
t1.join(); |
505 |
+ |
t2.join(); |
506 |
+ |
assertTrue(barrier.isBroken()); |
507 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
508 |
+ |
barrier.reset(); |
509 |
+ |
assertFalse(barrier.isBroken()); |
510 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
511 |
+ |
} |
512 |
+ |
} |
513 |
+ |
catch (Exception ex) { |
514 |
+ |
unexpectedException(); |
515 |
+ |
} |
516 |
+ |
} |
517 |
+ |
|
518 |
+ |
/** |
519 |
+ |
* Reset of a barrier after timeout reinitializes it. |
520 |
+ |
*/ |
521 |
+ |
public void testResetAfterTimeout() { |
522 |
+ |
try { |
523 |
+ |
final CyclicBarrier start = new CyclicBarrier(3); |
524 |
+ |
final CyclicBarrier barrier = new CyclicBarrier(3); |
525 |
+ |
for (int i = 0; i < 2; i++) { |
526 |
+ |
Thread t1 = new Thread(new Runnable() { |
527 |
+ |
public void run() { |
528 |
+ |
try { start.await(); } |
529 |
+ |
catch (Exception ie) { |
530 |
+ |
threadFail("start barrier"); |
531 |
+ |
} |
532 |
+ |
try { barrier.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); } |
533 |
+ |
catch (TimeoutException ok) {} |
534 |
+ |
catch (Throwable thrown) { |
535 |
+ |
unexpectedException(); |
536 |
+ |
}}}); |
537 |
+ |
|
538 |
+ |
Thread t2 = new Thread(new Runnable() { |
539 |
+ |
public void run() { |
540 |
+ |
try { start.await(); } |
541 |
+ |
catch (Exception ie) { |
542 |
+ |
threadFail("start barrier"); |
543 |
+ |
} |
544 |
+ |
try { barrier.await(); } |
545 |
+ |
catch (BrokenBarrierException ok) {} |
546 |
+ |
catch (Throwable thrown) { |
547 |
+ |
unexpectedException(); |
548 |
+ |
}}}); |
549 |
+ |
|
550 |
+ |
t1.start(); |
551 |
+ |
t2.start(); |
552 |
+ |
try { start.await(); } |
553 |
+ |
catch (Exception ie) { threadFail("start barrier"); } |
554 |
+ |
t1.join(); |
555 |
+ |
t2.join(); |
556 |
+ |
assertTrue(barrier.isBroken()); |
557 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
558 |
+ |
barrier.reset(); |
559 |
+ |
assertFalse(barrier.isBroken()); |
560 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
561 |
+ |
} |
562 |
+ |
} |
563 |
+ |
catch (Exception ex) { |
564 |
+ |
unexpectedException(); |
565 |
+ |
} |
566 |
+ |
} |
567 |
+ |
|
568 |
+ |
|
569 |
+ |
/** |
570 |
+ |
* Reset of a barrier after a failed command reinitializes it. |
571 |
+ |
*/ |
572 |
+ |
public void testResetAfterCommandException() { |
573 |
+ |
try { |
574 |
+ |
final CyclicBarrier start = new CyclicBarrier(3); |
575 |
+ |
final CyclicBarrier barrier = |
576 |
+ |
new CyclicBarrier(3, new Runnable() { |
577 |
+ |
public void run() { |
578 |
+ |
throw new NullPointerException(); }}); |
579 |
+ |
for (int i = 0; i < 2; i++) { |
580 |
+ |
Thread t1 = new Thread(new Runnable() { |
581 |
+ |
public void run() { |
582 |
+ |
try { start.await(); } |
583 |
+ |
catch (Exception ie) { |
584 |
+ |
threadFail("start barrier"); |
585 |
+ |
} |
586 |
+ |
try { barrier.await(); } |
587 |
+ |
catch (BrokenBarrierException ok) {} |
588 |
+ |
catch (Throwable thrown) { |
589 |
+ |
unexpectedException(); |
590 |
+ |
}}}); |
591 |
+ |
|
592 |
+ |
Thread t2 = new Thread(new Runnable() { |
593 |
+ |
public void run() { |
594 |
+ |
try { start.await(); } |
595 |
+ |
catch (Exception ie) { |
596 |
+ |
threadFail("start barrier"); |
597 |
+ |
} |
598 |
+ |
try { barrier.await(); } |
599 |
+ |
catch (BrokenBarrierException ok) {} |
600 |
+ |
catch (Throwable thrown) { |
601 |
+ |
unexpectedException(); |
602 |
+ |
}}}); |
603 |
+ |
|
604 |
+ |
t1.start(); |
605 |
+ |
t2.start(); |
606 |
+ |
try { start.await(); } |
607 |
+ |
catch (Exception ie) { threadFail("start barrier"); } |
608 |
+ |
while (barrier.getNumberWaiting() < 2) { Thread.yield(); } |
609 |
+ |
try { barrier.await(); } |
610 |
+ |
catch (Exception ok) { } |
611 |
+ |
t1.join(); |
612 |
+ |
t2.join(); |
613 |
+ |
assertTrue(barrier.isBroken()); |
614 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
615 |
+ |
barrier.reset(); |
616 |
+ |
assertFalse(barrier.isBroken()); |
617 |
+ |
assertEquals(0, barrier.getNumberWaiting()); |
618 |
+ |
} |
619 |
+ |
} |
620 |
+ |
catch (Exception ex) { |
621 |
+ |
unexpectedException(); |
622 |
+ |
} |
623 |
+ |
} |
624 |
|
} |