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dl |
1.1 |
/* |
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1.5 |
* 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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jsr166 |
1.6 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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dl |
1.1 |
*/ |
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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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dl |
1.2 |
public class ExchangerTest extends JSR166TestCase { |
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jsr166 |
1.6 |
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1.1 |
public static void main(String[] args) { |
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jsr166 |
1.6 |
junit.textui.TestRunner.run (suite()); |
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1.1 |
} |
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public static Test suite() { |
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return new TestSuite(ExchangerTest.class); |
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} |
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1.3 |
/** |
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* exchange exchanges objects across two threads |
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1.3 |
*/ |
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1.2 |
public void testExchange() { |
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1.1 |
final Exchanger e = new Exchanger(); |
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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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Object v = e.exchange(one); |
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threadAssertEquals(v, two); |
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Object w = e.exchange(v); |
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threadAssertEquals(w, one); |
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jsr166 |
1.7 |
} catch (InterruptedException e){ |
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1.3 |
threadUnexpectedException(); |
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1.1 |
} |
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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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Object v = e.exchange(two); |
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threadAssertEquals(v, one); |
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Object w = e.exchange(v); |
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threadAssertEquals(w, two); |
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jsr166 |
1.7 |
} catch (InterruptedException e){ |
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threadUnexpectedException(); |
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1.2 |
} |
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} |
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}); |
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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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t2.join(); |
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jsr166 |
1.7 |
} catch (InterruptedException ex) { |
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dl |
1.3 |
unexpectedException(); |
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} |
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} |
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dl |
1.3 |
/** |
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1.4 |
* timed exchange exchanges objects across two threads |
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1.3 |
*/ |
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dl |
1.2 |
public void testTimedExchange() { |
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final Exchanger e = new Exchanger(); |
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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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Object v = e.exchange(one, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadAssertEquals(v, two); |
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Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadAssertEquals(w, one); |
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jsr166 |
1.7 |
} catch (InterruptedException e){ |
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dl |
1.3 |
threadUnexpectedException(); |
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jsr166 |
1.7 |
} catch (TimeoutException toe) { |
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1.3 |
threadUnexpectedException(); |
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1.2 |
} |
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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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Object v = e.exchange(two, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadAssertEquals(v, one); |
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Object w = e.exchange(v, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadAssertEquals(w, two); |
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jsr166 |
1.7 |
} catch (InterruptedException e){ |
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1.3 |
threadUnexpectedException(); |
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jsr166 |
1.7 |
} catch (TimeoutException toe) { |
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threadUnexpectedException(); |
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1.1 |
} |
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} |
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}); |
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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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t2.join(); |
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jsr166 |
1.7 |
} catch (InterruptedException ex) { |
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dl |
1.3 |
unexpectedException(); |
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1.1 |
} |
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} |
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dl |
1.3 |
/** |
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1.4 |
* interrupt during wait for exchange throws IE |
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1.3 |
*/ |
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dl |
1.2 |
public void testExchange_InterruptedException(){ |
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1.1 |
final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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dl |
1.2 |
try { |
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1.1 |
e.exchange(one); |
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1.3 |
threadShouldThrow(); |
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jsr166 |
1.7 |
} catch (InterruptedException success){ |
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dl |
1.1 |
} |
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} |
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}); |
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dl |
1.2 |
try { |
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1.1 |
t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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jsr166 |
1.7 |
} catch (InterruptedException ex) { |
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dl |
1.3 |
unexpectedException(); |
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dl |
1.1 |
} |
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} |
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dl |
1.3 |
/** |
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1.4 |
* interrupt during wait for timed exchange throws IE |
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dl |
1.3 |
*/ |
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dl |
1.2 |
public void testTimedExchange_InterruptedException(){ |
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1.1 |
final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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dl |
1.2 |
try { |
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dl |
1.1 |
e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
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dl |
1.3 |
threadShouldThrow(); |
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jsr166 |
1.7 |
} catch (InterruptedException success){ |
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} catch (Exception e2){ |
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dl |
1.2 |
threadFail("should throw IE"); |
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dl |
1.1 |
} |
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} |
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}); |
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dl |
1.2 |
try { |
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1.1 |
t.start(); |
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t.interrupt(); |
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t.join(); |
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jsr166 |
1.7 |
} catch (InterruptedException ex){ |
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dl |
1.3 |
unexpectedException(); |
150 |
dl |
1.1 |
} |
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} |
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153 |
dl |
1.3 |
/** |
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dl |
1.4 |
* timeout during wait for timed exchange throws TOE |
155 |
dl |
1.3 |
*/ |
156 |
dl |
1.2 |
public void testExchange_TimeOutException(){ |
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dl |
1.1 |
final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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dl |
1.2 |
try { |
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dl |
1.1 |
e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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dl |
1.3 |
threadShouldThrow(); |
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jsr166 |
1.7 |
} catch (TimeoutException success){ |
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} catch (InterruptedException e2){ |
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dl |
1.2 |
threadFail("should throw TOE"); |
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dl |
1.1 |
} |
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} |
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}); |
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dl |
1.2 |
try { |
170 |
dl |
1.1 |
t.start(); |
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t.join(); |
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jsr166 |
1.7 |
} catch (InterruptedException ex){ |
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dl |
1.3 |
unexpectedException(); |
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dl |
1.1 |
} |
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} |
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dl |
1.4 |
|
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/** |
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* If one exchanging thread is interrupted, another succeeds. |
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*/ |
180 |
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public void testReplacementAfterExchange() { |
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final Exchanger e = new Exchanger(); |
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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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Object v = e.exchange(one); |
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threadAssertEquals(v, two); |
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Object w = e.exchange(v); |
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threadShouldThrow(); |
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jsr166 |
1.7 |
} catch (InterruptedException success){ |
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dl |
1.4 |
} |
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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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Object v = e.exchange(two); |
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threadAssertEquals(v, one); |
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Thread.sleep(SMALL_DELAY_MS); |
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Object w = e.exchange(v); |
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threadAssertEquals(w, three); |
201 |
jsr166 |
1.7 |
} catch (InterruptedException e){ |
202 |
dl |
1.4 |
threadUnexpectedException(); |
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} |
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} |
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}); |
206 |
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Thread t3 = new Thread(new Runnable(){ |
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public void run(){ |
208 |
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try { |
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Thread.sleep(SMALL_DELAY_MS); |
210 |
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Object w = e.exchange(three); |
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threadAssertEquals(w, one); |
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jsr166 |
1.7 |
} catch (InterruptedException e){ |
213 |
dl |
1.4 |
threadUnexpectedException(); |
214 |
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} |
215 |
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} |
216 |
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}); |
217 |
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218 |
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try { |
219 |
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t1.start(); |
220 |
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t2.start(); |
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t3.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t1.interrupt(); |
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t1.join(); |
225 |
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t2.join(); |
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t3.join(); |
227 |
jsr166 |
1.7 |
} catch (InterruptedException ex) { |
228 |
dl |
1.4 |
unexpectedException(); |
229 |
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} |
230 |
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} |
231 |
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232 |
dl |
1.1 |
} |