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import java.math.BigInteger; |
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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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private static final String TEST_STRING = "a test string"; |
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|
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private static class MyTask implements Runnable { |
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public void run() { completed = true; } |
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public boolean isCompleted() { return completed; } |
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public void reset() { completed = false; } |
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private boolean completed = false; |
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} |
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|
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private static class StringTask implements Callable<String> { |
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public String call() { return TEST_STRING; } |
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} |
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|
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static class DirectExecutor implements Executor { |
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public void execute(Runnable r) { |
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r.run(); |
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} |
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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 Executor 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(Executor 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 = Executors.execute(exec, 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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* execute(Executor, Runnable) will throw |
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* RejectedExecutionException Attempting to execute a runnable on |
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* runnables are attempted on a pool capable on handling one |
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* until it throws an exception |
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*/ |
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public void testExecute1(){ |
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public void testExecute1() { |
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ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1)); |
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try{ |
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try { |
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for(int i = 0; i < 5; ++i){ |
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Executors.execute(p, new MediumRunnable(), Boolean.TRUE); |
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} |
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fail("should throw"); |
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shouldThrow(); |
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} catch(RejectedExecutionException success){} |
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joinPool(p); |
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} |
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* runnables are attempted on a pool capable on handling one |
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* until it throws an exception |
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*/ |
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public void testExecute2(){ |
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public void testExecute2() { |
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ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1)); |
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try{ |
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try { |
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for(int i = 0; i < 5; ++i) { |
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Executors.execute(p, new SmallCallable()); |
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} |
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fail("should throw"); |
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}catch(RejectedExecutionException e){} |
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shouldThrow(); |
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} catch(RejectedExecutionException e){} |
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joinPool(p); |
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} |
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* A single use of invoke starts that will wait long enough |
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* for the invoking thread to be interrupted |
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*/ |
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public void testInvoke2(){ |
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public void testInvoke2() { |
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final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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try{ |
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Executors.invoke(p,new Runnable(){ |
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public void run(){ |
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try{ |
130 |
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public void run() { |
131 |
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try { |
132 |
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Executors.invoke(p,new Runnable() { |
133 |
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public void run() { |
134 |
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try { |
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Thread.sleep(MEDIUM_DELAY_MS); |
136 |
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fail("should throw"); |
137 |
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}catch(InterruptedException e){ |
136 |
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shouldThrow(); |
137 |
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} catch(InterruptedException e){ |
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} |
139 |
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} |
140 |
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}); |
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} catch(InterruptedException success){ |
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} catch(Exception e) { |
143 |
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fail("unexpected exception"); |
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unexpectedException(); |
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} |
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} |
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}); |
148 |
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try{ |
148 |
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try { |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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}catch(Exception e){ |
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fail("unexpected exception"); |
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} catch(Exception e){ |
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unexpectedException(); |
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} |
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joinPool(p); |
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} |
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* underlying Runnable throws an exception, here the |
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* DivideByZeroException will cause an ExecutionException |
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*/ |
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< |
public void testInvoke3(){ |
164 |
> |
public void testInvoke3() { |
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ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
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try{ |
167 |
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Runnable r = new Runnable(){ |
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public void run(){ |
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try { |
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Runnable r = new Runnable() { |
168 |
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public void run() { |
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int i = 5/0; |
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} |
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}; |
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Executors.invoke(p,r); |
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} |
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fail("should throw"); |
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shouldThrow(); |
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} catch(ExecutionException success){ |
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} catch(Exception e){ |
180 |
< |
fail("should throw EE"); |
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> |
unexpectedException(); |
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} |
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joinPool(p); |
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} |
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* InterruptedException A single use of invoke starts that will |
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* wait long enough for the invoking thread to be interrupted |
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*/ |
192 |
< |
public void testInvoke5(){ |
192 |
> |
public void testInvoke5() { |
193 |
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final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
194 |
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|
195 |
< |
final Callable c = new Callable(){ |
196 |
< |
public Object call(){ |
197 |
< |
try{ |
195 |
> |
final Callable c = new Callable() { |
196 |
> |
public Object call() { |
197 |
> |
try { |
198 |
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Executors.invoke(p, new SmallCallable()); |
199 |
< |
fail("should throw"); |
200 |
< |
}catch(InterruptedException e){} |
199 |
> |
shouldThrow(); |
200 |
> |
} catch(InterruptedException e){} |
201 |
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catch(RejectedExecutionException e2){} |
202 |
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catch(ExecutionException e3){} |
203 |
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return Boolean.TRUE; |
206 |
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|
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208 |
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|
209 |
< |
Thread t = new Thread(new Runnable(){ |
210 |
< |
public void run(){ |
211 |
< |
try{ |
209 |
> |
Thread t = new Thread(new Runnable() { |
210 |
> |
public void run() { |
211 |
> |
try { |
212 |
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c.call(); |
213 |
< |
}catch(Exception e){} |
213 |
> |
} catch(Exception e){} |
214 |
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} |
215 |
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}); |
216 |
< |
try{ |
216 |
> |
try { |
217 |
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t.start(); |
218 |
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Thread.sleep(SHORT_DELAY_MS); |
219 |
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t.interrupt(); |
220 |
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t.join(); |
221 |
< |
}catch(InterruptedException e){ |
222 |
< |
fail("unexpected exception"); |
221 |
> |
} catch(InterruptedException e){ |
222 |
> |
unexpectedException(); |
223 |
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} |
224 |
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|
225 |
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joinPool(p); |
230 |
|
* An ExecutionException occurs when the underlying Runnable throws |
231 |
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* an exception, here the DivideByZeroException will cause an ExecutionException |
232 |
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*/ |
233 |
< |
public void testInvoke6(){ |
233 |
> |
public void testInvoke6() { |
234 |
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ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
235 |
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|
236 |
< |
try{ |
237 |
< |
Callable c = new Callable(){ |
238 |
< |
public Object call(){ |
236 |
> |
try { |
237 |
> |
Callable c = new Callable() { |
238 |
> |
public Object call() { |
239 |
|
int i = 5/0; |
240 |
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return Boolean.TRUE; |
241 |
|
} |
245 |
|
Executors.invoke(p,c); |
246 |
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} |
247 |
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|
248 |
< |
fail("should throw"); |
249 |
< |
}catch(RejectedExecutionException e){} |
248 |
> |
shouldThrow(); |
249 |
> |
} catch(RejectedExecutionException e){} |
250 |
|
catch(InterruptedException e2){} |
251 |
|
catch(ExecutionException e3){} |
252 |
|
joinPool(p); |
253 |
|
} |
254 |
|
|
255 |
+ |
/** |
256 |
+ |
* |
257 |
+ |
*/ |
258 |
|
public void testExecuteRunnable () { |
259 |
|
try { |
260 |
|
Executor e = new DirectExecutor(); |
261 |
< |
Task task = new Task(); |
262 |
< |
|
201 |
< |
assertFalse("task should not be complete", task.isCompleted()); |
202 |
< |
|
261 |
> |
MyTask task = new MyTask(); |
262 |
> |
assertFalse(task.isCompleted()); |
263 |
|
Future<String> future = Executors.execute(e, task, TEST_STRING); |
264 |
|
String result = future.get(); |
265 |
< |
|
266 |
< |
assertTrue("task should be complete", task.isCompleted()); |
207 |
< |
assertSame("should return test string", TEST_STRING, result); |
265 |
> |
assertTrue(task.isCompleted()); |
266 |
> |
assertSame(TEST_STRING, result); |
267 |
|
} |
268 |
|
catch (ExecutionException ex) { |
269 |
< |
fail("Unexpected exception"); |
269 |
> |
unexpectedException(); |
270 |
|
} |
271 |
|
catch (InterruptedException ex) { |
272 |
< |
fail("Unexpected exception"); |
272 |
> |
unexpectedException(); |
273 |
|
} |
274 |
|
} |
275 |
|
|
276 |
+ |
/** |
277 |
+ |
* |
278 |
+ |
*/ |
279 |
|
public void testInvokeRunnable () { |
280 |
|
try { |
281 |
|
Executor e = new DirectExecutor(); |
282 |
< |
Task task = new Task(); |
283 |
< |
|
222 |
< |
assertFalse("task should not be complete", task.isCompleted()); |
223 |
< |
|
282 |
> |
MyTask task = new MyTask(); |
283 |
> |
assertFalse(task.isCompleted()); |
284 |
|
Executors.invoke(e, task); |
285 |
< |
|
226 |
< |
assertTrue("task should be complete", task.isCompleted()); |
285 |
> |
assertTrue(task.isCompleted()); |
286 |
|
} |
287 |
|
catch (ExecutionException ex) { |
288 |
< |
fail("Unexpected exception"); |
288 |
> |
unexpectedException(); |
289 |
|
} |
290 |
|
catch (InterruptedException ex) { |
291 |
< |
fail("Unexpected exception"); |
291 |
> |
unexpectedException(); |
292 |
|
} |
293 |
|
} |
294 |
|
|
295 |
+ |
/** |
296 |
+ |
* |
297 |
+ |
*/ |
298 |
|
public void testExecuteCallable () { |
299 |
|
try { |
300 |
|
Executor e = new DirectExecutor(); |
301 |
|
Future<String> future = Executors.execute(e, new StringTask()); |
302 |
|
String result = future.get(); |
303 |
< |
|
242 |
< |
assertSame("should return test string", TEST_STRING, result); |
303 |
> |
assertSame(TEST_STRING, result); |
304 |
|
} |
305 |
|
catch (ExecutionException ex) { |
306 |
< |
fail("Unexpected exception"); |
306 |
> |
unexpectedException(); |
307 |
|
} |
308 |
|
catch (InterruptedException ex) { |
309 |
< |
fail("Unexpected exception"); |
309 |
> |
unexpectedException(); |
310 |
|
} |
311 |
|
} |
312 |
|
|
313 |
+ |
/** |
314 |
+ |
* |
315 |
+ |
*/ |
316 |
|
public void testInvokeCallable () { |
317 |
|
try { |
318 |
|
Executor e = new DirectExecutor(); |
319 |
|
String result = Executors.invoke(e, new StringTask()); |
320 |
|
|
321 |
< |
assertSame("should return test string", TEST_STRING, result); |
321 |
> |
assertSame(TEST_STRING, result); |
322 |
|
} |
323 |
|
catch (ExecutionException ex) { |
324 |
< |
fail("Unexpected exception" ); |
324 |
> |
unexpectedException(); |
325 |
|
} |
326 |
|
catch (InterruptedException ex) { |
327 |
< |
fail("Unexpected exception"); |
264 |
< |
} |
265 |
< |
} |
266 |
< |
|
267 |
< |
private static final String TEST_STRING = "a test string"; |
268 |
< |
|
269 |
< |
private static class Task implements Runnable { |
270 |
< |
public void run() { completed = true; } |
271 |
< |
public boolean isCompleted() { return completed; } |
272 |
< |
public void reset() { completed = false; } |
273 |
< |
private boolean completed = false; |
274 |
< |
} |
275 |
< |
|
276 |
< |
private static class StringTask implements Callable<String> { |
277 |
< |
public String call() { return TEST_STRING; } |
278 |
< |
} |
279 |
< |
|
280 |
< |
static class DirectExecutor implements Executor { |
281 |
< |
public void execute(Runnable r) { |
282 |
< |
r.run(); |
327 |
> |
unexpectedException(); |
328 |
|
} |
329 |
|
} |
330 |
|
|
331 |
|
/** |
332 |
< |
* Check that timeouts from execute will time out if they compute |
288 |
< |
* too long. |
332 |
> |
* timeouts from execute will time out if they compute too long. |
333 |
|
*/ |
290 |
– |
|
334 |
|
public void testTimedCallable() { |
335 |
|
int N = 10000; |
336 |
|
ExecutorService executor = Executors.newSingleThreadExecutor(); |
356 |
|
return; |
357 |
|
} |
358 |
|
catch (Exception e) { |
359 |
< |
fail("unexpected exception: " + e); |
359 |
> |
unexpectedException(); |
360 |
|
} |
361 |
|
} |
362 |
|
// if by chance we didn't ever time out, total time must be small |
369 |
|
} |
370 |
|
|
371 |
|
|
329 |
– |
static class TimedCallable<T> implements Callable<T> { |
330 |
– |
private final Executor exec; |
331 |
– |
private final Callable<T> func; |
332 |
– |
private final long msecs; |
333 |
– |
|
334 |
– |
TimedCallable(Executor exec, Callable<T> func, long msecs) { |
335 |
– |
this.exec = exec; |
336 |
– |
this.func = func; |
337 |
– |
this.msecs = msecs; |
338 |
– |
} |
339 |
– |
|
340 |
– |
public T call() throws Exception { |
341 |
– |
Future<T> ftask = Executors.execute(exec, func); |
342 |
– |
try { |
343 |
– |
return ftask.get(msecs, TimeUnit.MILLISECONDS); |
344 |
– |
} finally { |
345 |
– |
ftask.cancel(true); |
346 |
– |
} |
347 |
– |
} |
348 |
– |
} |
349 |
– |
|
350 |
– |
|
351 |
– |
private static class Fib implements Callable<BigInteger> { |
352 |
– |
private final BigInteger n; |
353 |
– |
Fib(long n) { |
354 |
– |
if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n); |
355 |
– |
this.n = BigInteger.valueOf(n); |
356 |
– |
} |
357 |
– |
public BigInteger call() { |
358 |
– |
BigInteger f1 = BigInteger.ONE; |
359 |
– |
BigInteger f2 = f1; |
360 |
– |
for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) { |
361 |
– |
BigInteger t = f1.add(f2); |
362 |
– |
f1 = f2; |
363 |
– |
f2 = t; |
364 |
– |
} |
365 |
– |
return f1; |
366 |
– |
} |
367 |
– |
}; |
368 |
– |
|
372 |
|
|
373 |
|
|
374 |
|
} |