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/*
* Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @run testng AsyncShutdownNow
* @summary Test invoking shutdownNow with threads blocked in Future.get,
* invokeAll, and invokeAny
*/
// TODO: this test is far too slow
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static org.testng.Assert.*;
public class AsyncShutdownNow {
// long running interruptible task
private static final Callable<Void> SLEEP_FOR_A_DAY = () -> {
Thread.sleep(86400_000);
return null;
};
private ScheduledExecutorService scheduledExecutor;
@BeforeClass
public void setup() {
scheduledExecutor = Executors.newScheduledThreadPool(1);
}
@AfterClass
public void teardown() {
scheduledExecutor.shutdown();
}
/**
* Schedule the given executor service to be shutdown abruptly after the given
* delay, in seconds.
*/
private void scheduleShutdownNow(ExecutorService executor, int delayInSeconds) {
scheduledExecutor.schedule(() -> {
executor.shutdownNow();
return null;
}, delayInSeconds, TimeUnit.SECONDS);
}
/**
* The executors to test.
*/
@DataProvider(name = "executors")
public Object[][] executors() {
return new Object[][] {
{ new ForkJoinPool() },
{ new ForkJoinPool(1) },
};
}
/**
* Test shutdownNow with running task and thread blocked in Future::get.
*/
@Test(dataProvider = "executors")
public void testFutureGet(ExecutorService executor) throws Exception {
System.out.format("testFutureGet: %s%n", executor);
scheduleShutdownNow(executor, 5);
try {
// submit long running task, the task should be cancelled
Future<?> future = executor.submit(SLEEP_FOR_A_DAY);
try {
future.get();
assertTrue(false);
} catch (ExecutionException | RejectedExecutionException e) {
// expected
}
} finally {
executor.shutdown();
}
}
/**
* Test shutdownNow with running task and thread blocked in a timed Future::get.
*/
@Test(dataProvider = "executors")
public void testTimedFutureGet(ExecutorService executor) throws Exception {
System.out.format("testTimedFutureGet: %s%n", executor);
scheduleShutdownNow(executor, 5);
try {
// submit long running task, the task should be cancelled
Future<?> future = executor.submit(SLEEP_FOR_A_DAY);
try {
future.get(1, TimeUnit.HOURS);
assertTrue(false);
} catch (ExecutionException | RejectedExecutionException e) {
// expected
}
} finally {
executor.shutdown();
}
}
/**
* Test shutdownNow with thread blocked in invokeAll.
*/
@Test(dataProvider = "executors")
public void testInvokeAll(ExecutorService executor) throws Exception {
System.out.format("testInvokeAll: %s%n", executor);
scheduleShutdownNow(executor, 5);
try {
// execute long running tasks
List<Future<Void>> futures = executor.invokeAll(List.of(SLEEP_FOR_A_DAY, SLEEP_FOR_A_DAY));
for (Future<Void> f : futures) {
assertTrue(f.isDone());
try {
Object result = f.get();
assertTrue(false);
} catch (ExecutionException | CancellationException e) {
// expected
}
}
} finally {
executor.shutdown();
}
}
/**
* Test shutdownNow with thread blocked in invokeAny.
*/
@Test(dataProvider = "executors")
public void testInvokeAny(ExecutorService executor) throws Exception {
System.out.format("testInvokeAny: %s%n", executor);
scheduleShutdownNow(executor, 5);
try {
try {
// execute long running tasks
executor.invokeAny(List.of(SLEEP_FOR_A_DAY, SLEEP_FOR_A_DAY));
assertTrue(false);
} catch (ExecutionException | RejectedExecutionException e) {
// expected
}
} finally {
executor.shutdown();
}
}
}
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