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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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*/ |
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|
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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.math.BigInteger; |
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import java.security.*; |
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|
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public class ExecutorsTest 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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} |
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public static Test suite() { |
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return new TestSuite(ExecutorsTest.class); |
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} |
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|
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static class TimedCallable<T> implements Callable<T> { |
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private final ExecutorService exec; |
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private final Callable<T> func; |
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private final long msecs; |
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|
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TimedCallable(ExecutorService exec, Callable<T> func, long msecs) { |
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this.exec = exec; |
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this.func = func; |
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this.msecs = msecs; |
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} |
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|
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public T call() throws Exception { |
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Future<T> ftask = exec.submit(func); |
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try { |
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return ftask.get(msecs, TimeUnit.MILLISECONDS); |
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} finally { |
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ftask.cancel(true); |
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} |
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} |
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} |
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|
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|
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private static class Fib implements Callable<BigInteger> { |
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private final BigInteger n; |
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Fib(long n) { |
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if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n); |
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this.n = BigInteger.valueOf(n); |
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} |
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public BigInteger call() { |
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BigInteger f1 = BigInteger.ONE; |
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BigInteger f2 = f1; |
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for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) { |
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BigInteger t = f1.add(f2); |
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f1 = f2; |
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f2 = t; |
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} |
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return f1; |
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} |
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}; |
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|
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/** |
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* A newCachedThreadPool can execute runnables |
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*/ |
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public void testNewCachedThreadPool1() { |
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ExecutorService e = Executors.newCachedThreadPool(); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A newCachedThreadPool with given ThreadFactory can execute runnables |
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*/ |
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public void testNewCachedThreadPool2() { |
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ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A newCachedThreadPool with null ThreadFactory throws NPE |
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*/ |
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public void testNewCachedThreadPool3() { |
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try { |
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ExecutorService e = Executors.newCachedThreadPool(null); |
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shouldThrow(); |
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} |
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catch(NullPointerException success) { |
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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 new SingleThreadExecutor can execute runnables |
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*/ |
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public void testNewSingleThreadExecutor1() { |
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ExecutorService e = Executors.newSingleThreadExecutor(); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A new SingleThreadExecutor with given ThreadFactory can execute runnables |
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*/ |
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public void testNewSingleThreadExecutor2() { |
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ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A new SingleThreadExecutor with null ThreadFactory throws NPE |
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*/ |
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public void testNewSingleThreadExecutor3() { |
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try { |
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ExecutorService e = Executors.newSingleThreadExecutor(null); |
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shouldThrow(); |
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} |
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catch(NullPointerException success) { |
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} |
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} |
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|
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/** |
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* A new SingleThreadExecutor cannot be casted to concrete implementation |
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*/ |
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public void testCastNewSingleThreadExecutor() { |
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ExecutorService e = Executors.newSingleThreadExecutor(); |
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try { |
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ThreadPoolExecutor tpe = (ThreadPoolExecutor)e; |
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} catch (ClassCastException success) { |
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} finally { |
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joinPool(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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* A new newFixedThreadPool can execute runnables |
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*/ |
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public void testNewFixedThreadPool1() { |
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ExecutorService e = Executors.newFixedThreadPool(2); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A new newFixedThreadPool with given ThreadFactory can execute runnables |
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*/ |
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public void testNewFixedThreadPool2() { |
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ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* A new newFixedThreadPool with null ThreadFactory throws NPE |
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*/ |
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public void testNewFixedThreadPool3() { |
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try { |
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ExecutorService e = Executors.newFixedThreadPool(2, null); |
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shouldThrow(); |
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} |
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catch(NullPointerException success) { |
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} |
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} |
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|
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/** |
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* A new newFixedThreadPool with 0 threads throws IAE |
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*/ |
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public void testNewFixedThreadPool4() { |
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try { |
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ExecutorService e = Executors.newFixedThreadPool(0); |
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shouldThrow(); |
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} |
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catch(IllegalArgumentException success) { |
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} |
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} |
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|
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|
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/** |
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* An unconfigurable newFixedThreadPool can execute runnables |
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*/ |
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public void testunconfigurableExecutorService() { |
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ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2)); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* unconfigurableExecutorService(null) throws NPE |
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*/ |
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public void testunconfigurableExecutorServiceNPE() { |
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try { |
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ExecutorService e = Executors.unconfigurableExecutorService(null); |
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} |
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catch (NullPointerException success) { |
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} |
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} |
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|
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/** |
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* unconfigurableScheduledExecutorService(null) throws NPE |
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*/ |
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public void testunconfigurableScheduledExecutorServiceNPE() { |
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try { |
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ExecutorService e = Executors.unconfigurableScheduledExecutorService(null); |
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} |
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catch (NullPointerException success) { |
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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 newSingleThreadScheduledExecutor successfully runs delayed task |
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*/ |
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public void testNewSingleThreadScheduledExecutor() { |
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try { |
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TrackedCallable callable = new TrackedCallable(); |
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ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor(); |
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Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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assertFalse(callable.done); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(callable.done); |
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assertEquals(Boolean.TRUE, f.get()); |
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p1.shutdown(); |
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joinPool(p1); |
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} catch(RejectedExecutionException e){} |
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catch(Exception e){ |
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e.printStackTrace(); |
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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 newScheduledThreadPool successfully runs delayed task |
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*/ |
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public void testnewScheduledThreadPool() { |
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try { |
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TrackedCallable callable = new TrackedCallable(); |
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ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2); |
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Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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assertFalse(callable.done); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(callable.done); |
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assertEquals(Boolean.TRUE, f.get()); |
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p1.shutdown(); |
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joinPool(p1); |
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} catch(RejectedExecutionException e){} |
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catch(Exception e){ |
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e.printStackTrace(); |
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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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* an unconfigurable newScheduledThreadPool successfully runs delayed task |
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*/ |
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public void testunconfigurableScheduledExecutorService() { |
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try { |
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TrackedCallable callable = new TrackedCallable(); |
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ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2)); |
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Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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assertFalse(callable.done); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(callable.done); |
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assertEquals(Boolean.TRUE, f.get()); |
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p1.shutdown(); |
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joinPool(p1); |
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} catch(RejectedExecutionException e){} |
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catch(Exception e){ |
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e.printStackTrace(); |
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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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* timeouts from execute will time out if they compute too long. |
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*/ |
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public void testTimedCallable() { |
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int N = 10000; |
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ExecutorService executor = Executors.newSingleThreadExecutor(); |
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List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N); |
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try { |
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long startTime = System.currentTimeMillis(); |
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|
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long i = 0; |
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while (tasks.size() < N) { |
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tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1)); |
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i += 10; |
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} |
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|
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int iters = 0; |
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BigInteger sum = BigInteger.ZERO; |
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for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) { |
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try { |
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++iters; |
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sum = sum.add(it.next().call()); |
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} |
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catch (TimeoutException success) { |
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assertTrue(iters > 0); |
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return; |
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} |
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catch (Exception e) { |
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unexpectedException(); |
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} |
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} |
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// if by chance we didn't ever time out, total time must be small |
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long elapsed = System.currentTimeMillis() - startTime; |
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assertTrue(elapsed < N); |
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} |
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finally { |
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joinPool(executor); |
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} |
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} |
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|
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|
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/** |
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* ThreadPoolExecutor using defaultThreadFactory has |
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* specified group, priority, daemon status, and name |
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*/ |
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public void testDefaultThreadFactory() { |
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final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
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Runnable r = new Runnable() { |
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public void run() { |
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Thread current = Thread.currentThread(); |
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threadAssertTrue(!current.isDaemon()); |
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threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY); |
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ThreadGroup g = current.getThreadGroup(); |
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SecurityManager s = System.getSecurityManager(); |
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if (s != null) |
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threadAssertTrue(g == s.getThreadGroup()); |
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else |
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threadAssertTrue(g == egroup); |
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String name = current.getName(); |
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threadAssertTrue(name.endsWith("thread-1")); |
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} |
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}; |
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ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory()); |
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|
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e.execute(r); |
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e.shutdown(); |
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try { |
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Thread.sleep(SHORT_DELAY_MS); |
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} catch (Exception eX) { |
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unexpectedException(); |
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} finally { |
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joinPool(e); |
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} |
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} |
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|
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/** |
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* ThreadPoolExecutor using privilegedThreadFactory has |
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* specified group, priority, daemon status, name, |
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* access control context and context class loader |
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*/ |
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public void testPrivilegedThreadFactory() { |
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Policy savedPolicy = Policy.getPolicy(); |
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AdjustablePolicy policy = new AdjustablePolicy(); |
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policy.addPermission(new RuntimePermission("getContextClassLoader")); |
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policy.addPermission(new RuntimePermission("setContextClassLoader")); |
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Policy.setPolicy(policy); |
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final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
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final ClassLoader thisccl = Thread.currentThread().getContextClassLoader(); |
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final AccessControlContext thisacc = AccessController.getContext(); |
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Runnable r = new Runnable() { |
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public void run() { |
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Thread current = Thread.currentThread(); |
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threadAssertTrue(!current.isDaemon()); |
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threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY); |
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ThreadGroup g = current.getThreadGroup(); |
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SecurityManager s = System.getSecurityManager(); |
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if (s != null) |
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threadAssertTrue(g == s.getThreadGroup()); |
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else |
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threadAssertTrue(g == egroup); |
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String name = current.getName(); |
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threadAssertTrue(name.endsWith("thread-1")); |
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threadAssertTrue(thisccl == current.getContextClassLoader()); |
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threadAssertTrue(thisacc.equals(AccessController.getContext())); |
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} |
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}; |
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ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory()); |
397 |
|
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Policy.setPolicy(savedPolicy); |
399 |
e.execute(r); |
400 |
e.shutdown(); |
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try { |
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Thread.sleep(SHORT_DELAY_MS); |
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} catch (Exception ex) { |
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unexpectedException(); |
405 |
} finally { |
406 |
joinPool(e); |
407 |
} |
408 |
|
409 |
} |
410 |
|
411 |
static class CheckCCL implements Callable<Object> { |
412 |
public Object call() { |
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AccessControlContext acc = AccessController.getContext(); |
414 |
acc.checkPermission(new RuntimePermission("getContextClassLoader")); |
415 |
return null; |
416 |
} |
417 |
} |
418 |
|
419 |
|
420 |
/** |
421 |
* Without class loader permissions, creating |
422 |
* privilegedCallableUsingCurrentClassLoader throws ACE |
423 |
*/ |
424 |
public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() { |
425 |
Policy savedPolicy = Policy.getPolicy(); |
426 |
AdjustablePolicy policy = new AdjustablePolicy(); |
427 |
Policy.setPolicy(policy); |
428 |
try { |
429 |
Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable()); |
430 |
shouldThrow(); |
431 |
} catch(AccessControlException success) { |
432 |
} catch(Exception ex) { |
433 |
unexpectedException(); |
434 |
} |
435 |
finally { |
436 |
Policy.setPolicy(savedPolicy); |
437 |
} |
438 |
} |
439 |
|
440 |
/** |
441 |
* Without class loader permissions, calling |
442 |
* privilegedCallableUsingCurrentClassLoader throws ACE |
443 |
*/ |
444 |
public void testprivilegedCallableUsingCCLWithPrivs() { |
445 |
Policy savedPolicy = Policy.getPolicy(); |
446 |
AdjustablePolicy policy = new AdjustablePolicy(); |
447 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
448 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
449 |
Policy.setPolicy(policy); |
450 |
try { |
451 |
Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable()); |
452 |
task.call(); |
453 |
} catch(Exception ex) { |
454 |
unexpectedException(); |
455 |
} |
456 |
finally { |
457 |
Policy.setPolicy(savedPolicy); |
458 |
} |
459 |
} |
460 |
|
461 |
/** |
462 |
* Without permissions, calling privilegedCallable throws ACE |
463 |
*/ |
464 |
public void testprivilegedCallableWithNoPrivs() { |
465 |
Policy savedPolicy = Policy.getPolicy(); |
466 |
AdjustablePolicy policy = new AdjustablePolicy(); |
467 |
Policy.setPolicy(policy); |
468 |
Callable task = Executors.privilegedCallable(new CheckCCL()); |
469 |
Policy.setPolicy(savedPolicy); |
470 |
try { |
471 |
task.call(); |
472 |
shouldThrow(); |
473 |
} catch(AccessControlException success) { |
474 |
} catch(Exception ex) { |
475 |
unexpectedException(); |
476 |
} finally { |
477 |
} |
478 |
} |
479 |
|
480 |
/** |
481 |
* With permissions, calling privilegedCallable succeeds |
482 |
*/ |
483 |
public void testprivilegedCallableWithPrivs() { |
484 |
Policy savedPolicy = Policy.getPolicy(); |
485 |
AdjustablePolicy policy = new AdjustablePolicy(); |
486 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
487 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
488 |
Policy.setPolicy(policy); |
489 |
Callable task = Executors.privilegedCallable(new CheckCCL()); |
490 |
try { |
491 |
task.call(); |
492 |
} catch(Exception ex) { |
493 |
unexpectedException(); |
494 |
} finally { |
495 |
Policy.setPolicy(savedPolicy); |
496 |
} |
497 |
} |
498 |
|
499 |
/** |
500 |
* callable(Runnable) returns null when called |
501 |
*/ |
502 |
public void testCallable1() { |
503 |
try { |
504 |
Callable c = Executors.callable(new NoOpRunnable()); |
505 |
assertNull(c.call()); |
506 |
} catch(Exception ex) { |
507 |
unexpectedException(); |
508 |
} |
509 |
|
510 |
} |
511 |
|
512 |
/** |
513 |
* callable(Runnable, result) returns result when called |
514 |
*/ |
515 |
public void testCallable2() { |
516 |
try { |
517 |
Callable c = Executors.callable(new NoOpRunnable(), one); |
518 |
assertEquals(one, c.call()); |
519 |
} catch(Exception ex) { |
520 |
unexpectedException(); |
521 |
} |
522 |
} |
523 |
|
524 |
/** |
525 |
* callable(PrivilegedAction) returns its result when called |
526 |
*/ |
527 |
public void testCallable3() { |
528 |
try { |
529 |
Callable c = Executors.callable(new PrivilegedAction() { |
530 |
public Object run() { return one; }}); |
531 |
assertEquals(one, c.call()); |
532 |
} catch(Exception ex) { |
533 |
unexpectedException(); |
534 |
} |
535 |
} |
536 |
|
537 |
/** |
538 |
* callable(PrivilegedExceptionAction) returns its result when called |
539 |
*/ |
540 |
public void testCallable4() { |
541 |
try { |
542 |
Callable c = Executors.callable(new PrivilegedExceptionAction() { |
543 |
public Object run() { return one; }}); |
544 |
assertEquals(one, c.call()); |
545 |
} catch(Exception ex) { |
546 |
unexpectedException(); |
547 |
} |
548 |
} |
549 |
|
550 |
|
551 |
/** |
552 |
* callable(null Runnable) throws NPE |
553 |
*/ |
554 |
public void testCallableNPE1() { |
555 |
try { |
556 |
Runnable r = null; |
557 |
Callable c = Executors.callable(r); |
558 |
} catch (NullPointerException success) { |
559 |
} |
560 |
} |
561 |
|
562 |
/** |
563 |
* callable(null, result) throws NPE |
564 |
*/ |
565 |
public void testCallableNPE2() { |
566 |
try { |
567 |
Runnable r = null; |
568 |
Callable c = Executors.callable(r, one); |
569 |
} catch (NullPointerException success) { |
570 |
} |
571 |
} |
572 |
|
573 |
/** |
574 |
* callable(null PrivilegedAction) throws NPE |
575 |
*/ |
576 |
public void testCallableNPE3() { |
577 |
try { |
578 |
PrivilegedAction r = null; |
579 |
Callable c = Executors.callable(r); |
580 |
} catch (NullPointerException success) { |
581 |
} |
582 |
} |
583 |
|
584 |
/** |
585 |
* callable(null PrivilegedExceptionAction) throws NPE |
586 |
*/ |
587 |
public void testCallableNPE4() { |
588 |
try { |
589 |
PrivilegedExceptionAction r = null; |
590 |
Callable c = Executors.callable(r); |
591 |
} catch (NullPointerException success) { |
592 |
} |
593 |
} |
594 |
|
595 |
|
596 |
} |