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/*
* Copyright (c) 2008, 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
* @bug 4313887 6993267
* @summary Unit test for Sun-specific ExtendedCopyOption.INTERRUPTIBLE option
* @modules jdk.unsupported
* @library ..
*/
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.FileStore;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import com.sun.nio.file.ExtendedCopyOption;
public class InterruptCopy {
private static final long FILE_SIZE_TO_COPY = 1024L * 1024L * 1024L;
private static final int INTERRUPT_DELAY_IN_MS = 50;
private static final int CANCEL_DELAY_IN_MS = 10;
public static void main(String[] args) throws Exception {
Path dir = TestUtil.createTemporaryDirectory();
try {
FileStore store = Files.getFileStore(dir);
System.out.format("Checking space (%s)\n", store);
long usableSpace = store.getUsableSpace();
if (usableSpace < 2*FILE_SIZE_TO_COPY) {
System.out.println("Insufficient disk space to run test.");
return;
}
doTest(dir);
} finally {
TestUtil.removeAll(dir);
}
}
static void doTest(Path dir) throws Exception {
final Path source = dir.resolve("foo");
final Path target = dir.resolve("bar");
// create source file (don't create it as sparse file because we
// require the copy to take a long time)
System.out.println("Creating source file...");
byte[] buf = new byte[32*1024];
long total = 0;
try (OutputStream out = Files.newOutputStream(source)) {
do {
out.write(buf);
total += buf.length;
} while (total < FILE_SIZE_TO_COPY);
}
System.out.println("Source file created.");
ScheduledExecutorService pool =
Executors.newSingleThreadScheduledExecutor();
try {
// copy source to target in main thread, interrupting it
// after a delay
final Thread me = Thread.currentThread();
final CountDownLatch interruptLatch = new CountDownLatch(1);
Future<?> wakeup = pool.submit(new Runnable() {
public void run() {
try {
interruptLatch.await();
Thread.sleep(INTERRUPT_DELAY_IN_MS);
} catch (InterruptedException ignore) {
}
System.out.printf("Interrupting at %d ms...%n",
System.currentTimeMillis());
me.interrupt();
}
});
try {
interruptLatch.countDown();
long theBeginning = System.currentTimeMillis();
System.out.printf("Copying file at %d ms...%n", theBeginning);
Files.copy(source, target, ExtendedCopyOption.INTERRUPTIBLE);
long theEnd = System.currentTimeMillis();
System.out.printf("Done copying at %d ms...%n", theEnd);
long duration = theEnd - theBeginning;
// If the copy was interrupted the target file should have been
// deleted, so if the file does not exist, then the copy must
// have been interrupted without throwing an exception; if the
// file exists, then the copy finished before being interrupted
// so not throwing an exception is not considered a failure
if (Files.notExists(target))
throw new RuntimeException("Copy was not interrupted in " +
duration + " ms");
} catch (IOException e) {
boolean interrupted = Thread.interrupted();
if (!interrupted)
throw new RuntimeException("Interrupt status was not set");
System.out.println("Copy failed (this is expected).");
}
try {
wakeup.get();
} catch (InterruptedException ignore) { }
Thread.interrupted();
// copy source to target via task in thread pool, interrupting it
// after a delay using cancel(true)
CountDownLatch cancelLatch = new CountDownLatch(1);
Future<Void> result = pool.submit(new Callable<Void>() {
public Void call() throws IOException {
cancelLatch.countDown();
System.out.printf("Copying file at %d ms...%n",
System.currentTimeMillis());
Files.copy(source, target, ExtendedCopyOption.INTERRUPTIBLE,
StandardCopyOption.REPLACE_EXISTING);
System.out.printf("Done copying at %d ms...%n",
System.currentTimeMillis());
return null;
}
});
try {
cancelLatch.await();
Thread.sleep(CANCEL_DELAY_IN_MS);
} catch (InterruptedException ignore) {
}
if (result.isDone())
throw new RuntimeException("Copy finished before cancellation");
System.out.printf("Cancelling at %d ms...%n",
System.currentTimeMillis());
boolean cancelled = result.cancel(true);
if (cancelled)
System.out.println("Copy cancelled.");
else {
result.get();
throw new RuntimeException("Copy was not cancelled");
}
} finally {
pool.shutdown();
}
}
}
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