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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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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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unexpectedException(); |
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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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try { |
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c.await(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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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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public void run() { |
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try { |
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c.await(); |
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threadShouldThrow(); |
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threadShouldThrow(); |
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} catch(BrokenBarrierException success){ |
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} catch(Exception i){ |
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threadUnexpectedException(); |
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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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unexpectedException(); |
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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); |
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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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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); |
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threadShouldThrow(); |
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c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadShouldThrow(); |
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} catch(BrokenBarrierException success){ |
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} catch(Exception i){ |
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threadUnexpectedException(); |
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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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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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* A timeout in timed await throws TimeoutException |
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*/ |
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} catch(TimeoutException 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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} |
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}); |
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try { |
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t.start(); |
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t.join(); |
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t.join(); |
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} catch(InterruptedException e){ |
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unexpectedException(); |
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} |
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* throw BrokenBarrierException |
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*/ |
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public void testAwait4_Timeout_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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public void run() { |
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try { |
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c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadShouldThrow(); |
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threadShouldThrow(); |
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} catch(BrokenBarrierException success){ |
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} catch(Exception i){ |
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threadUnexpectedException(); |
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try { |
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t1.start(); |
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t2.start(); |
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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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unexpectedException(); |
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* throw BrokenBarrierException |
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*/ |
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public void testAwait5_Timeout_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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public void run() { |
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try { |
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c.await(); |
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threadShouldThrow(); |
286 |
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threadShouldThrow(); |
287 |
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} catch(BrokenBarrierException success){ |
288 |
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} catch(Exception i){ |
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threadUnexpectedException(); |
293 |
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try { |
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t1.start(); |
295 |
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t2.start(); |
296 |
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t1.join(); |
296 |
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t1.join(); |
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t2.join(); |
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} catch(InterruptedException e){ |
299 |
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unexpectedException(); |
300 |
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} |
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} |
302 |
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|
302 |
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|
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/** |
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* A reset of an active barrier causes waiting threads to throw |
305 |
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* BrokenBarrierException |
311 |
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try { |
312 |
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c.await(); |
313 |
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threadShouldThrow(); |
314 |
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} catch(BrokenBarrierException success){} |
314 |
> |
} catch(BrokenBarrierException success){} |
315 |
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catch(Exception b){ |
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threadUnexpectedException(); |
317 |
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} |
321 |
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public void run() { |
322 |
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try { |
323 |
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c.await(); |
324 |
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threadShouldThrow(); |
324 |
> |
threadShouldThrow(); |
325 |
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} catch(BrokenBarrierException success){ |
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} catch(Exception i){ |
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threadUnexpectedException(); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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c.reset(); |
336 |
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t1.join(); |
336 |
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t1.join(); |
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t2.join(); |
338 |
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} catch(InterruptedException e){ |
339 |
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unexpectedException(); |
369 |
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t1.start(); |
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t2.start(); |
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c.await(); |
372 |
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t1.join(); |
372 |
> |
t1.join(); |
373 |
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t2.join(); |
374 |
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} catch(Exception e){ |
375 |
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unexpectedException(); |
376 |
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} |
377 |
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} |
378 |
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|
379 |
+ |
/** |
380 |
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* All threads block while a barrier is broken. |
381 |
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*/ |
382 |
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public void testReset_Leakage() { |
383 |
+ |
try { |
384 |
+ |
final CyclicBarrier c = new CyclicBarrier(2); |
385 |
+ |
final AtomicBoolean done = new AtomicBoolean(); |
386 |
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Thread t = new Thread() { |
387 |
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public void run() { |
388 |
+ |
while (!done.get()) { |
389 |
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try { |
390 |
+ |
while (c.isBroken()) |
391 |
+ |
c.reset(); |
392 |
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|
393 |
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c.await(); |
394 |
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threadFail("await should not return"); |
395 |
+ |
} |
396 |
+ |
catch (BrokenBarrierException e) { |
397 |
+ |
} |
398 |
+ |
catch (InterruptedException ie) { |
399 |
+ |
} |
400 |
+ |
} |
401 |
+ |
} |
402 |
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}; |
403 |
+ |
|
404 |
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t.start(); |
405 |
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for( int i = 0; i < 4; i++) { |
406 |
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Thread.sleep(SHORT_DELAY_MS); |
407 |
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t.interrupt(); |
408 |
+ |
} |
409 |
+ |
done.set(true); |
410 |
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t.interrupt(); |
411 |
+ |
} |
412 |
+ |
catch (Exception ex) { |
413 |
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unexpectedException(); |
414 |
+ |
} |
415 |
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} |
416 |
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|
417 |
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/** |
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 |
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for (int i = 0; i < 3; i++) { |
425 |
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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 |
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unexpectedException(); |
434 |
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}}}); |
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 |
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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 |
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assertEquals(0, barrier.getNumberWaiting()); |
457 |
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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 |
|
} |