| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.store; |
| |
| |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.util.Random; |
| import java.util.concurrent.CountDownLatch; |
| |
| import org.junit.Ignore; |
| |
| /** |
| * Tests MMapDirectory |
| */ |
| // See: https://issues.apache.org/jira/browse/SOLR-12028 Tests cannot remove files on Windows machines occasionally |
| public class TestMmapDirectory extends BaseDirectoryTestCase { |
| |
| @Override |
| protected Directory getDirectory(Path path) throws IOException { |
| MMapDirectory m = new MMapDirectory(path); |
| m.setPreload(random().nextBoolean()); |
| return m; |
| } |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| assumeTrue(MMapDirectory.UNMAP_NOT_SUPPORTED_REASON, MMapDirectory.UNMAP_SUPPORTED); |
| } |
| |
| @Ignore("This test is for JVM testing purposes. There are no guarantees that it may not fail with SIGSEGV!") |
| public void testAceWithThreads() throws Exception { |
| for (int iter = 0; iter < 10; iter++) { |
| Directory dir = getDirectory(createTempDir("testAceWithThreads")); |
| IndexOutput out = dir.createOutput("test", IOContext.DEFAULT); |
| Random random = random(); |
| for (int i = 0; i < 8 * 1024 * 1024; i++) { |
| out.writeInt(random.nextInt()); |
| } |
| out.close(); |
| IndexInput in = dir.openInput("test", IOContext.DEFAULT); |
| IndexInput clone = in.clone(); |
| final byte accum[] = new byte[32 * 1024 * 1024]; |
| final CountDownLatch shotgun = new CountDownLatch(1); |
| Thread t1 = new Thread(() -> { |
| try { |
| shotgun.await(); |
| for (int i = 0; i < 10; i++) { |
| clone.seek(0); |
| clone.readBytes(accum, 0, accum.length); |
| } |
| } catch (IOException | AlreadyClosedException ok) { |
| // OK |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| }); |
| t1.start(); |
| shotgun.countDown(); |
| in.close(); |
| t1.join(); |
| dir.close(); |
| } |
| } |
| } |