jsr166-mirror.jsr166tck.1.7.0.source-code.ThreadPoolExecutorTest Maven / Gradle / Ivy
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/*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
* Other contributors include Andrew Wright, Jeffrey Hayes,
* Pat Fisher, Mike Judd.
*/
import java.util.concurrent.*;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.util.concurrent.atomic.*;
import junit.framework.*;
import java.util.*;
public class ThreadPoolExecutorTest extends JSR166TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(suite());
}
public static Test suite() {
return new TestSuite(ThreadPoolExecutorTest.class);
}
static class ExtendedTPE extends ThreadPoolExecutor {
volatile boolean beforeCalled = false;
volatile boolean afterCalled = false;
volatile boolean terminatedCalled = false;
public ExtendedTPE() {
super(1, 1, LONG_DELAY_MS, MILLISECONDS, new SynchronousQueue());
}
protected void beforeExecute(Thread t, Runnable r) {
beforeCalled = true;
}
protected void afterExecute(Runnable r, Throwable t) {
afterCalled = true;
}
protected void terminated() {
terminatedCalled = true;
}
}
static class FailingThreadFactory implements ThreadFactory {
int calls = 0;
public Thread newThread(Runnable r) {
if (++calls > 1) return null;
return new Thread(r);
}
}
/**
* execute successfully executes a runnable
*/
public void testExecute() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch done = new CountDownLatch(1);
final Runnable task = new CheckedRunnable() {
public void realRun() {
done.countDown();
}};
try {
p.execute(task);
assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
} finally {
joinPool(p);
}
}
/**
* getActiveCount increases but doesn't overestimate, when a
* thread becomes active
*/
public void testGetActiveCount() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
assertEquals(0, p.getActiveCount());
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertEquals(1, p.getActiveCount());
done.await();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(1, p.getActiveCount());
} finally {
done.countDown();
joinPool(p);
}
}
/**
* prestartCoreThread starts a thread if under corePoolSize, else doesn't
*/
public void testPrestartCoreThread() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
assertEquals(0, p.getPoolSize());
assertTrue(p.prestartCoreThread());
assertEquals(1, p.getPoolSize());
assertTrue(p.prestartCoreThread());
assertEquals(2, p.getPoolSize());
assertFalse(p.prestartCoreThread());
assertEquals(2, p.getPoolSize());
joinPool(p);
}
/**
* prestartAllCoreThreads starts all corePoolSize threads
*/
public void testPrestartAllCoreThreads() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
assertEquals(0, p.getPoolSize());
p.prestartAllCoreThreads();
assertEquals(2, p.getPoolSize());
p.prestartAllCoreThreads();
assertEquals(2, p.getPoolSize());
joinPool(p);
}
/**
* getCompletedTaskCount increases, but doesn't overestimate,
* when tasks complete
*/
public void testGetCompletedTaskCount() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch threadProceed = new CountDownLatch(1);
final CountDownLatch threadDone = new CountDownLatch(1);
try {
assertEquals(0, p.getCompletedTaskCount());
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertEquals(0, p.getCompletedTaskCount());
threadProceed.await();
threadDone.countDown();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(0, p.getCompletedTaskCount());
threadProceed.countDown();
threadDone.await();
delay(SHORT_DELAY_MS);
assertEquals(1, p.getCompletedTaskCount());
} finally {
joinPool(p);
}
}
/**
* getCorePoolSize returns size given in constructor if not otherwise set
*/
public void testGetCorePoolSize() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
assertEquals(1, p.getCorePoolSize());
joinPool(p);
}
/**
* getKeepAliveTime returns value given in constructor if not otherwise set
*/
public void testGetKeepAliveTime() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
1000, MILLISECONDS,
new ArrayBlockingQueue(10));
assertEquals(1, p.getKeepAliveTime(TimeUnit.SECONDS));
joinPool(p);
}
/**
* getThreadFactory returns factory in constructor if not set
*/
public void testGetThreadFactory() {
ThreadFactory tf = new SimpleThreadFactory();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
tf,
new NoOpREHandler());
assertSame(tf, p.getThreadFactory());
joinPool(p);
}
/**
* setThreadFactory sets the thread factory returned by getThreadFactory
*/
public void testSetThreadFactory() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
ThreadFactory tf = new SimpleThreadFactory();
p.setThreadFactory(tf);
assertSame(tf, p.getThreadFactory());
joinPool(p);
}
/**
* setThreadFactory(null) throws NPE
*/
public void testSetThreadFactoryNull() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setThreadFactory(null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(p);
}
}
/**
* getRejectedExecutionHandler returns handler in constructor if not set
*/
public void testGetRejectedExecutionHandler() {
final RejectedExecutionHandler h = new NoOpREHandler();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
h);
assertSame(h, p.getRejectedExecutionHandler());
joinPool(p);
}
/**
* setRejectedExecutionHandler sets the handler returned by
* getRejectedExecutionHandler
*/
public void testSetRejectedExecutionHandler() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
RejectedExecutionHandler h = new NoOpREHandler();
p.setRejectedExecutionHandler(h);
assertSame(h, p.getRejectedExecutionHandler());
joinPool(p);
}
/**
* setRejectedExecutionHandler(null) throws NPE
*/
public void testSetRejectedExecutionHandlerNull() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setRejectedExecutionHandler(null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(p);
}
}
/**
* getLargestPoolSize increases, but doesn't overestimate, when
* multiple threads active
*/
public void testGetLargestPoolSize() throws InterruptedException {
final int THREADS = 3;
final ThreadPoolExecutor p =
new ThreadPoolExecutor(THREADS, THREADS,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
final CountDownLatch done = new CountDownLatch(1);
try {
assertEquals(0, p.getLargestPoolSize());
for (int i = 0; i < THREADS; i++)
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadsStarted.countDown();
done.await();
assertEquals(THREADS, p.getLargestPoolSize());
}});
assertTrue(threadsStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(THREADS, p.getLargestPoolSize());
} finally {
done.countDown();
joinPool(p);
assertEquals(THREADS, p.getLargestPoolSize());
}
}
/**
* getMaximumPoolSize returns value given in constructor if not
* otherwise set
*/
public void testGetMaximumPoolSize() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 3,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
assertEquals(3, p.getMaximumPoolSize());
joinPool(p);
}
/**
* getPoolSize increases, but doesn't overestimate, when threads
* become active
*/
public void testGetPoolSize() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
assertEquals(0, p.getPoolSize());
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertEquals(1, p.getPoolSize());
done.await();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(1, p.getPoolSize());
} finally {
done.countDown();
joinPool(p);
}
}
/**
* getTaskCount increases, but doesn't overestimate, when tasks submitted
*/
public void testGetTaskCount() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
assertEquals(0, p.getTaskCount());
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertEquals(1, p.getTaskCount());
done.await();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(1, p.getTaskCount());
} finally {
done.countDown();
joinPool(p);
}
}
/**
* isShutdown is false before shutdown, true after
*/
public void testIsShutdown() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
assertFalse(p.isShutdown());
try { p.shutdown(); } catch (SecurityException ok) { return; }
assertTrue(p.isShutdown());
joinPool(p);
}
/**
* isTerminated is false before termination, true after
*/
public void testIsTerminated() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
assertFalse(p.isTerminated());
try {
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
assertFalse(p.isTerminated());
threadStarted.countDown();
done.await();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertFalse(p.isTerminating());
done.countDown();
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
assertTrue(p.isTerminated());
}
/**
* isTerminating is not true when running or when terminated
*/
public void testIsTerminating() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
assertFalse(p.isTerminating());
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
assertFalse(p.isTerminating());
threadStarted.countDown();
done.await();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertFalse(p.isTerminating());
done.countDown();
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
assertTrue(p.isTerminated());
assertFalse(p.isTerminating());
}
/**
* getQueue returns the work queue, which contains queued tasks
*/
public void testGetQueue() throws InterruptedException {
final BlockingQueue q = new ArrayBlockingQueue(10);
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
q);
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
FutureTask[] tasks = new FutureTask[5];
for (int i = 0; i < tasks.length; i++) {
Callable task = new CheckedCallable() {
public Boolean realCall() throws InterruptedException {
threadStarted.countDown();
assertSame(q, p.getQueue());
done.await();
return Boolean.TRUE;
}};
tasks[i] = new FutureTask(task);
p.execute(tasks[i]);
}
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertSame(q, p.getQueue());
assertFalse(q.contains(tasks[0]));
assertTrue(q.contains(tasks[tasks.length - 1]));
assertEquals(tasks.length - 1, q.size());
} finally {
done.countDown();
joinPool(p);
}
}
/**
* remove(task) removes queued task, and fails to remove active task
*/
public void testRemove() throws InterruptedException {
BlockingQueue q = new ArrayBlockingQueue(10);
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
q);
Runnable[] tasks = new Runnable[5];
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
for (int i = 0; i < tasks.length; i++) {
tasks[i] = new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
done.await();
}};
p.execute(tasks[i]);
}
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertFalse(p.remove(tasks[0]));
assertTrue(q.contains(tasks[4]));
assertTrue(q.contains(tasks[3]));
assertTrue(p.remove(tasks[4]));
assertFalse(p.remove(tasks[4]));
assertFalse(q.contains(tasks[4]));
assertTrue(q.contains(tasks[3]));
assertTrue(p.remove(tasks[3]));
assertFalse(q.contains(tasks[3]));
} finally {
done.countDown();
joinPool(p);
}
}
/**
* purge removes cancelled tasks from the queue
*/
public void testPurge() throws InterruptedException {
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
final BlockingQueue q = new ArrayBlockingQueue(10);
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
q);
FutureTask[] tasks = new FutureTask[5];
try {
for (int i = 0; i < tasks.length; i++) {
Callable task = new CheckedCallable() {
public Boolean realCall() throws InterruptedException {
threadStarted.countDown();
done.await();
return Boolean.TRUE;
}};
tasks[i] = new FutureTask(task);
p.execute(tasks[i]);
}
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
assertEquals(tasks.length, p.getTaskCount());
assertEquals(tasks.length - 1, q.size());
assertEquals(1L, p.getActiveCount());
assertEquals(0L, p.getCompletedTaskCount());
tasks[4].cancel(true);
tasks[3].cancel(false);
p.purge();
assertEquals(tasks.length - 3, q.size());
assertEquals(tasks.length - 2, p.getTaskCount());
p.purge(); // Nothing to do
assertEquals(tasks.length - 3, q.size());
assertEquals(tasks.length - 2, p.getTaskCount());
} finally {
done.countDown();
joinPool(p);
}
}
/**
* shutdownNow returns a list containing tasks that were not run
*/
public void testShutdownNow() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List l;
try {
for (int i = 0; i < 5; i++)
p.execute(new MediumPossiblyInterruptedRunnable());
}
finally {
try {
l = p.shutdownNow();
} catch (SecurityException ok) { return; }
}
assertTrue(p.isShutdown());
assertTrue(l.size() <= 4);
}
// Exception Tests
/**
* Constructor throws if corePoolSize argument is less than zero
*/
public void testConstructor1() {
try {
new ThreadPoolExecutor(-1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is less than zero
*/
public void testConstructor2() {
try {
new ThreadPoolExecutor(1, -1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is equal to zero
*/
public void testConstructor3() {
try {
new ThreadPoolExecutor(1, 0,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if keepAliveTime is less than zero
*/
public void testConstructor4() {
try {
new ThreadPoolExecutor(1, 2,
-1L, MILLISECONDS,
new ArrayBlockingQueue(10));
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if corePoolSize is greater than the maximumPoolSize
*/
public void testConstructor5() {
try {
new ThreadPoolExecutor(2, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if workQueue is set to null
*/
public void testConstructorNullPointerException() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
(BlockingQueue) null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if corePoolSize argument is less than zero
*/
public void testConstructor6() {
try {
new ThreadPoolExecutor(-1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is less than zero
*/
public void testConstructor7() {
try {
new ThreadPoolExecutor(1, -1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is equal to zero
*/
public void testConstructor8() {
try {
new ThreadPoolExecutor(1, 0,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if keepAliveTime is less than zero
*/
public void testConstructor9() {
try {
new ThreadPoolExecutor(1, 2,
-1L, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if corePoolSize is greater than the maximumPoolSize
*/
public void testConstructor10() {
try {
new ThreadPoolExecutor(2, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if workQueue is set to null
*/
public void testConstructorNullPointerException2() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
(BlockingQueue) null,
new SimpleThreadFactory());
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if threadFactory is set to null
*/
public void testConstructorNullPointerException3() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
(ThreadFactory) null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if corePoolSize argument is less than zero
*/
public void testConstructor11() {
try {
new ThreadPoolExecutor(-1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is less than zero
*/
public void testConstructor12() {
try {
new ThreadPoolExecutor(1, -1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is equal to zero
*/
public void testConstructor13() {
try {
new ThreadPoolExecutor(1, 0,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if keepAliveTime is less than zero
*/
public void testConstructor14() {
try {
new ThreadPoolExecutor(1, 2,
-1L, MILLISECONDS,
new ArrayBlockingQueue(10),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if corePoolSize is greater than the maximumPoolSize
*/
public void testConstructor15() {
try {
new ThreadPoolExecutor(2, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if workQueue is set to null
*/
public void testConstructorNullPointerException4() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
(BlockingQueue) null,
new NoOpREHandler());
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if handler is set to null
*/
public void testConstructorNullPointerException5() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
(RejectedExecutionHandler) null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if corePoolSize argument is less than zero
*/
public void testConstructor16() {
try {
new ThreadPoolExecutor(-1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is less than zero
*/
public void testConstructor17() {
try {
new ThreadPoolExecutor(1, -1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if maximumPoolSize is equal to zero
*/
public void testConstructor18() {
try {
new ThreadPoolExecutor(1, 0,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if keepAliveTime is less than zero
*/
public void testConstructor19() {
try {
new ThreadPoolExecutor(1, 2,
-1L, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if corePoolSize is greater than the maximumPoolSize
*/
public void testConstructor20() {
try {
new ThreadPoolExecutor(2, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* Constructor throws if workQueue is null
*/
public void testConstructorNullPointerException6() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
(BlockingQueue) null,
new SimpleThreadFactory(),
new NoOpREHandler());
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if handler is null
*/
public void testConstructorNullPointerException7() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
new SimpleThreadFactory(),
(RejectedExecutionHandler) null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* Constructor throws if ThreadFactory is null
*/
public void testConstructorNullPointerException8() {
try {
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10),
(ThreadFactory) null,
new NoOpREHandler());
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* get of submitted callable throws InterruptedException if interrupted
*/
public void testInterruptedSubmit() throws InterruptedException {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
60, TimeUnit.SECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
try {
Thread t = newStartedThread(new CheckedInterruptedRunnable() {
public void realRun() throws Exception {
Callable task = new CheckedCallable() {
public Boolean realCall() throws InterruptedException {
threadStarted.countDown();
done.await();
return Boolean.TRUE;
}};
p.submit(task).get();
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
t.interrupt();
awaitTermination(t, MEDIUM_DELAY_MS);
} finally {
done.countDown();
joinPool(p);
}
}
/**
* execute throws RejectedExecutionException if saturated.
*/
public void testSaturatedExecute() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1));
final CountDownLatch done = new CountDownLatch(1);
try {
Runnable task = new CheckedRunnable() {
public void realRun() throws InterruptedException {
done.await();
}};
for (int i = 0; i < 2; ++i)
p.execute(task);
for (int i = 0; i < 2; ++i) {
try {
p.execute(task);
shouldThrow();
} catch (RejectedExecutionException success) {}
assertTrue(p.getTaskCount() <= 2);
}
} finally {
done.countDown();
joinPool(p);
}
}
/**
* submit(runnable) throws RejectedExecutionException if saturated.
*/
public void testSaturatedSubmitRunnable() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1));
final CountDownLatch done = new CountDownLatch(1);
try {
Runnable task = new CheckedRunnable() {
public void realRun() throws InterruptedException {
done.await();
}};
for (int i = 0; i < 2; ++i)
p.submit(task);
for (int i = 0; i < 2; ++i) {
try {
p.execute(task);
shouldThrow();
} catch (RejectedExecutionException success) {}
assertTrue(p.getTaskCount() <= 2);
}
} finally {
done.countDown();
joinPool(p);
}
}
/**
* submit(callable) throws RejectedExecutionException if saturated.
*/
public void testSaturatedSubmitCallable() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1));
final CountDownLatch done = new CountDownLatch(1);
try {
Runnable task = new CheckedRunnable() {
public void realRun() throws InterruptedException {
done.await();
}};
for (int i = 0; i < 2; ++i)
p.submit(Executors.callable(task));
for (int i = 0; i < 2; ++i) {
try {
p.execute(task);
shouldThrow();
} catch (RejectedExecutionException success) {}
assertTrue(p.getTaskCount() <= 2);
}
} finally {
done.countDown();
joinPool(p);
}
}
/**
* executor using CallerRunsPolicy runs task if saturated.
*/
public void testSaturatedExecute2() {
RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS,
MILLISECONDS,
new ArrayBlockingQueue(1),
h);
try {
TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
for (int i = 0; i < tasks.length; ++i)
tasks[i] = new TrackedNoOpRunnable();
TrackedLongRunnable mr = new TrackedLongRunnable();
p.execute(mr);
for (int i = 0; i < tasks.length; ++i)
p.execute(tasks[i]);
for (int i = 1; i < tasks.length; ++i)
assertTrue(tasks[i].done);
try { p.shutdownNow(); } catch (SecurityException ok) { return; }
} finally {
joinPool(p);
}
}
/**
* executor using DiscardPolicy drops task if saturated.
*/
public void testSaturatedExecute3() {
RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1),
h);
try {
TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
for (int i = 0; i < tasks.length; ++i)
tasks[i] = new TrackedNoOpRunnable();
p.execute(new TrackedLongRunnable());
for (TrackedNoOpRunnable task : tasks)
p.execute(task);
for (TrackedNoOpRunnable task : tasks)
assertFalse(task.done);
try { p.shutdownNow(); } catch (SecurityException ok) { return; }
} finally {
joinPool(p);
}
}
/**
* executor using DiscardOldestPolicy drops oldest task if saturated.
*/
public void testSaturatedExecute4() {
RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1),
h);
try {
p.execute(new TrackedLongRunnable());
TrackedLongRunnable r2 = new TrackedLongRunnable();
p.execute(r2);
assertTrue(p.getQueue().contains(r2));
TrackedNoOpRunnable r3 = new TrackedNoOpRunnable();
p.execute(r3);
assertFalse(p.getQueue().contains(r2));
assertTrue(p.getQueue().contains(r3));
try { p.shutdownNow(); } catch (SecurityException ok) { return; }
} finally {
joinPool(p);
}
}
/**
* execute throws RejectedExecutionException if shutdown
*/
public void testRejectedExecutionExceptionOnShutdown() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1));
try { p.shutdown(); } catch (SecurityException ok) { return; }
try {
p.execute(new NoOpRunnable());
shouldThrow();
} catch (RejectedExecutionException success) {}
joinPool(p);
}
/**
* execute using CallerRunsPolicy drops task on shutdown
*/
public void testCallerRunsOnShutdown() {
RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy();
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1), h);
try { p.shutdown(); } catch (SecurityException ok) { return; }
try {
TrackedNoOpRunnable r = new TrackedNoOpRunnable();
p.execute(r);
assertFalse(r.done);
} finally {
joinPool(p);
}
}
/**
* execute using DiscardPolicy drops task on shutdown
*/
public void testDiscardOnShutdown() {
RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy();
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1),
h);
try { p.shutdown(); } catch (SecurityException ok) { return; }
try {
TrackedNoOpRunnable r = new TrackedNoOpRunnable();
p.execute(r);
assertFalse(r.done);
} finally {
joinPool(p);
}
}
/**
* execute using DiscardOldestPolicy drops task on shutdown
*/
public void testDiscardOldestOnShutdown() {
RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy();
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 1,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(1),
h);
try { p.shutdown(); } catch (SecurityException ok) { return; }
try {
TrackedNoOpRunnable r = new TrackedNoOpRunnable();
p.execute(r);
assertFalse(r.done);
} finally {
joinPool(p);
}
}
/**
* execute(null) throws NPE
*/
public void testExecuteNull() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.execute(null);
shouldThrow();
} catch (NullPointerException success) {}
joinPool(p);
}
/**
* setCorePoolSize of negative value throws IllegalArgumentException
*/
public void testCorePoolSizeIllegalArgumentException() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setCorePoolSize(-1);
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
joinPool(p);
}
/**
* setMaximumPoolSize(int) throws IllegalArgumentException if
* given a value less the core pool size
*/
public void testMaximumPoolSizeIllegalArgumentException() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 3,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setMaximumPoolSize(1);
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
joinPool(p);
}
/**
* setMaximumPoolSize throws IllegalArgumentException
* if given a negative value
*/
public void testMaximumPoolSizeIllegalArgumentException2() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 3,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setMaximumPoolSize(-1);
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
joinPool(p);
}
/**
* setKeepAliveTime throws IllegalArgumentException
* when given a negative value
*/
public void testKeepAliveTimeIllegalArgumentException() {
ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 3,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
p.setKeepAliveTime(-1,MILLISECONDS);
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
try { p.shutdown(); } catch (SecurityException ok) { return; }
}
joinPool(p);
}
/**
* terminated() is called on termination
*/
public void testTerminated() {
ExtendedTPE p = new ExtendedTPE();
try { p.shutdown(); } catch (SecurityException ok) { return; }
assertTrue(p.terminatedCalled);
joinPool(p);
}
/**
* beforeExecute and afterExecute are called when executing task
*/
public void testBeforeAfter() throws InterruptedException {
ExtendedTPE p = new ExtendedTPE();
try {
TrackedNoOpRunnable r = new TrackedNoOpRunnable();
p.execute(r);
delay(SHORT_DELAY_MS);
assertTrue(r.done);
assertTrue(p.beforeCalled);
assertTrue(p.afterCalled);
try { p.shutdown(); } catch (SecurityException ok) { return; }
} finally {
joinPool(p);
}
}
/**
* completed submit of callable returns result
*/
public void testSubmitCallable() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
Future future = e.submit(new StringTask());
String result = future.get();
assertSame(TEST_STRING, result);
} finally {
joinPool(e);
}
}
/**
* completed submit of runnable returns successfully
*/
public void testSubmitRunnable() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
Future future = e.submit(new NoOpRunnable());
future.get();
assertTrue(future.isDone());
} finally {
joinPool(e);
}
}
/**
* completed submit of (runnable, result) returns result
*/
public void testSubmitRunnable2() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
Future future = e.submit(new NoOpRunnable(), TEST_STRING);
String result = future.get();
assertSame(TEST_STRING, result);
} finally {
joinPool(e);
}
}
/**
* invokeAny(null) throws NPE
*/
public void testInvokeAny1() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAny(null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* invokeAny(empty collection) throws IAE
*/
public void testInvokeAny2() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAny(new ArrayList>());
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
joinPool(e);
}
}
/**
* invokeAny(c) throws NPE if c has null elements
*/
public void testInvokeAny3() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
final ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(latchAwaitingStringTask(latch));
l.add(null);
try {
e.invokeAny(l);
shouldThrow();
} catch (NullPointerException success) {
} finally {
latch.countDown();
joinPool(e);
}
}
/**
* invokeAny(c) throws ExecutionException if no task completes
*/
public void testInvokeAny4() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new NPETask());
try {
e.invokeAny(l);
shouldThrow();
} catch (ExecutionException success) {
assertTrue(success.getCause() instanceof NullPointerException);
} finally {
joinPool(e);
}
}
/**
* invokeAny(c) returns result of some task
*/
public void testInvokeAny5() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new StringTask());
l.add(new StringTask());
String result = e.invokeAny(l);
assertSame(TEST_STRING, result);
} finally {
joinPool(e);
}
}
/**
* invokeAll(null) throws NPE
*/
public void testInvokeAll1() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAll(null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* invokeAll(empty collection) returns empty collection
*/
public void testInvokeAll2() throws InterruptedException {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> r = e.invokeAll(new ArrayList>());
assertTrue(r.isEmpty());
} finally {
joinPool(e);
}
}
/**
* invokeAll(c) throws NPE if c has null elements
*/
public void testInvokeAll3() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new StringTask());
l.add(null);
try {
e.invokeAll(l);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* get of element of invokeAll(c) throws exception on failed task
*/
public void testInvokeAll4() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new NPETask());
List> futures = e.invokeAll(l);
assertEquals(1, futures.size());
try {
futures.get(0).get();
shouldThrow();
} catch (ExecutionException success) {
assertTrue(success.getCause() instanceof NullPointerException);
}
} finally {
joinPool(e);
}
}
/**
* invokeAll(c) returns results of all completed tasks
*/
public void testInvokeAll5() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new StringTask());
l.add(new StringTask());
List> futures = e.invokeAll(l);
assertEquals(2, futures.size());
for (Future future : futures)
assertSame(TEST_STRING, future.get());
} finally {
joinPool(e);
}
}
/**
* timed invokeAny(null) throws NPE
*/
public void testTimedInvokeAny1() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* timed invokeAny(,,null) throws NPE
*/
public void testTimedInvokeAnyNullTimeUnit() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new StringTask());
try {
e.invokeAny(l, MEDIUM_DELAY_MS, null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* timed invokeAny(empty collection) throws IAE
*/
public void testTimedInvokeAny2() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAny(new ArrayList>(), MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (IllegalArgumentException success) {
} finally {
joinPool(e);
}
}
/**
* timed invokeAny(c) throws NPE if c has null elements
*/
public void testTimedInvokeAny3() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
final ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(latchAwaitingStringTask(latch));
l.add(null);
try {
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (NullPointerException success) {
} finally {
latch.countDown();
joinPool(e);
}
}
/**
* timed invokeAny(c) throws ExecutionException if no task completes
*/
public void testTimedInvokeAny4() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new NPETask());
try {
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (ExecutionException success) {
assertTrue(success.getCause() instanceof NullPointerException);
} finally {
joinPool(e);
}
}
/**
* timed invokeAny(c) returns result of some task
*/
public void testTimedInvokeAny5() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new StringTask());
l.add(new StringTask());
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
assertSame(TEST_STRING, result);
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(null) throws NPE
*/
public void testTimedInvokeAll1() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(,,null) throws NPE
*/
public void testTimedInvokeAllNullTimeUnit() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new StringTask());
try {
e.invokeAll(l, MEDIUM_DELAY_MS, null);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(empty collection) returns empty collection
*/
public void testTimedInvokeAll2() throws InterruptedException {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> r = e.invokeAll(new ArrayList>(), MEDIUM_DELAY_MS, MILLISECONDS);
assertTrue(r.isEmpty());
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(c) throws NPE if c has null elements
*/
public void testTimedInvokeAll3() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new StringTask());
l.add(null);
try {
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
shouldThrow();
} catch (NullPointerException success) {
} finally {
joinPool(e);
}
}
/**
* get of element of invokeAll(c) throws exception on failed task
*/
public void testTimedInvokeAll4() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
List> l = new ArrayList>();
l.add(new NPETask());
List> futures =
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
assertEquals(1, futures.size());
try {
futures.get(0).get();
shouldThrow();
} catch (ExecutionException success) {
assertTrue(success.getCause() instanceof NullPointerException);
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(c) returns results of all completed tasks
*/
public void testTimedInvokeAll5() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new StringTask());
l.add(new StringTask());
List> futures =
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
assertEquals(2, futures.size());
for (Future future : futures)
assertSame(TEST_STRING, future.get());
} finally {
joinPool(e);
}
}
/**
* timed invokeAll(c) cancels tasks not completed by timeout
*/
public void testTimedInvokeAll6() throws Exception {
ExecutorService e =
new ThreadPoolExecutor(2, 2,
LONG_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
try {
List> l = new ArrayList>();
l.add(new StringTask());
l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
l.add(new StringTask());
List> futures =
e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS);
assertEquals(3, futures.size());
Iterator> it = futures.iterator();
Future f1 = it.next();
Future f2 = it.next();
Future f3 = it.next();
assertTrue(f1.isDone());
assertTrue(f2.isDone());
assertTrue(f3.isDone());
assertFalse(f1.isCancelled());
assertTrue(f2.isCancelled());
} finally {
joinPool(e);
}
}
/**
* Execution continues if there is at least one thread even if
* thread factory fails to create more
*/
public void testFailingThreadFactory() throws InterruptedException {
final ExecutorService e =
new ThreadPoolExecutor(100, 100,
LONG_DELAY_MS, MILLISECONDS,
new LinkedBlockingQueue(),
new FailingThreadFactory());
try {
final int TASKS = 100;
final CountDownLatch done = new CountDownLatch(TASKS);
for (int k = 0; k < TASKS; ++k)
e.execute(new CheckedRunnable() {
public void realRun() {
done.countDown();
}});
assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS));
} finally {
joinPool(e);
}
}
/**
* allowsCoreThreadTimeOut is by default false.
*/
public void testAllowsCoreThreadTimeOut() {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 2,
1000, MILLISECONDS,
new ArrayBlockingQueue(10));
assertFalse(p.allowsCoreThreadTimeOut());
joinPool(p);
}
/**
* allowCoreThreadTimeOut(true) causes idle threads to time out
*/
public void testAllowCoreThreadTimeOut_true() throws Exception {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 10,
SHORT_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
try {
p.allowCoreThreadTimeOut(true);
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertEquals(1, p.getPoolSize());
}});
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
for (int i = 0; i < (MEDIUM_DELAY_MS/10); i++) {
if (p.getPoolSize() == 0)
break;
delay(10);
}
assertEquals(0, p.getPoolSize());
} finally {
joinPool(p);
}
}
/**
* allowCoreThreadTimeOut(false) causes idle threads not to time out
*/
public void testAllowCoreThreadTimeOut_false() throws Exception {
final ThreadPoolExecutor p =
new ThreadPoolExecutor(2, 10,
SHORT_DELAY_MS, MILLISECONDS,
new ArrayBlockingQueue(10));
final CountDownLatch threadStarted = new CountDownLatch(1);
try {
p.allowCoreThreadTimeOut(false);
p.execute(new CheckedRunnable() {
public void realRun() throws InterruptedException {
threadStarted.countDown();
assertTrue(p.getPoolSize() >= 1);
}});
delay(SMALL_DELAY_MS);
assertTrue(p.getPoolSize() >= 1);
} finally {
joinPool(p);
}
}
/**
* execute allows the same task to be submitted multiple times, even
* if rejected
*/
public void testRejectedRecycledTask() throws InterruptedException {
final int nTasks = 1000;
final CountDownLatch done = new CountDownLatch(nTasks);
final Runnable recycledTask = new Runnable() {
public void run() {
done.countDown();
}};
final ThreadPoolExecutor p =
new ThreadPoolExecutor(1, 30, 60, TimeUnit.SECONDS,
new ArrayBlockingQueue(30));
try {
for (int i = 0; i < nTasks; ++i) {
for (;;) {
try {
p.execute(recycledTask);
break;
}
catch (RejectedExecutionException ignore) {}
}
}
// enough time to run all tasks
assertTrue(done.await(nTasks * SHORT_DELAY_MS, MILLISECONDS));
} finally {
p.shutdown();
}
}
}
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