/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.mine;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import org.junit.Test;
import java.util.concurrent.*;
/**
* Created by Anton Nashatyrev on 17.12.2015.
*/
public class FutureTest {
@Test
public void interruptTest() throws InterruptedException {
ListeningExecutorService executor = MoreExecutors.listeningDecorator(Executors.newSingleThreadExecutor());
final ListenableFuture<Object> future = executor.submit(new Callable<Object>() {
@Override
public Object call() throws Exception {
// try {
System.out.println("Waiting");
Thread.sleep(10000);
System.out.println("Complete");
return null;
// } catch (Exception e) {
// e.printStackTrace();
// throw e;
// }
}
});
future.addListener(new Runnable() {
@Override
public void run() {
System.out.println("Listener: " + future.isCancelled() + ", " + future.isDone());
try {
future.get();
} catch (InterruptedException e) {
throw new RuntimeException(e);
} catch (ExecutionException e) {
throw new RuntimeException(e);
}
}
}, MoreExecutors.sameThreadExecutor());
Thread.sleep(1000);
future.cancel(true);
}
@Test
public void guavaExecutor() throws ExecutionException, InterruptedException {
// ListeningExecutorService executor = MoreExecutors.listeningDecorator(
// new ThreadPoolExecutor(2, 16, 1L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>()));
ExecutorService executor =
new ThreadPoolExecutor(16, 16, 1L, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(1));
Future<Object> future = null;
for (int i = 0; i < 4; i++) {
final int ii = i;
future = executor.submit(new Callable<Object>() {
@Override
public Object call() throws Exception {
try {
System.out.println("Waiting " + ii);
Thread.sleep(5000);
System.out.println("Complete " + ii);
return null;
} catch (Exception e) {
e.printStackTrace();
throw e;
}
}
});
}
future.get();
}
@Test
public void anyFutureTest() throws ExecutionException, InterruptedException {
ListeningExecutorService executor = MoreExecutors.listeningDecorator(
new ThreadPoolExecutor(16, 16, 1L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>()));
AnyFuture<Integer> anyFuture = new AnyFuture<Integer>() {
@Override
protected void postProcess(Integer integer) {
System.out.println("FutureTest.postProcess:" + "integer = [" + integer + "]");
}
};
for (int i = 0; i < 4; i++) {
final int ii = i;
ListenableFuture<Integer> future = executor.submit(new Callable<Integer>() {
@Override
public Integer call() throws Exception {
System.out.println("Waiting " + ii);
Thread.sleep(5000 - ii * 500);
System.out.println("Complete " + ii);
return ii;
}
});
anyFuture.add(future);
}
Thread.sleep(1000);
anyFuture.cancel(true);
System.out.println("Getting anyFuture...");
System.out.println("anyFuture: " + anyFuture.isCancelled() + ", " + anyFuture.isDone());
anyFuture = new AnyFuture<Integer>() {
@Override
protected void postProcess(Integer integer) {
System.out.println("FutureTest.postProcess:" + "integer = [" + integer + "]");
}
};
for (int i = 0; i < 4; i++) {
final int ii = i;
ListenableFuture<Integer> future = executor.submit(new Callable<Integer>() {
@Override
public Integer call() throws Exception {
System.out.println("Waiting " + ii);
Thread.sleep(5000 - ii * 500);
System.out.println("Complete " + ii);
return ii;
}
});
anyFuture.add(future);
}
System.out.println("Getting anyFuture...");
System.out.println("anyFuture.get(): " + anyFuture.get() + ", " + anyFuture.isCancelled() + ", " + anyFuture.isDone());
}
}