| /* |
| * Copyright (c) 2015, 2022 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| package org.glassfish.jersey.tests.memleaks.testleak; |
| |
| import org.glassfish.jersey.internal.guava.ThreadFactoryBuilder; |
| |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| |
| import javax.ws.rs.DefaultValue; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.QueryParam; |
| |
| import javax.inject.Singleton; |
| |
| |
| /** |
| * Resource that causes {@link OutOfMemoryError} exception upon repetitive call of {@link #invoke(int)} of an application that is |
| * being redeployed. |
| * <p/> |
| * The purpose of this resource (and the app) is to test whether the memory leaking infrastructure for redeployment scenarios |
| * works. |
| * |
| * @author Stepan Vavra |
| */ |
| @Path("/") |
| @Singleton |
| public class DaemonThreadMemoryLeakingResource { |
| |
| @POST |
| @Path("invoke") |
| public String invoke(@DefaultValue("1048576") @QueryParam("size") final int size) { |
| |
| final Future<?> future = Executors.newSingleThreadExecutor(new ThreadFactoryBuilder().setDaemon(true).build()) |
| .submit(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| System.out.println("Running a Thread!"); |
| final int mbytes = size / (1024 * 1024); |
| final byte[][] bytes = new byte[mbytes][]; |
| for (int i = 1; i <= mbytes; ++i) { |
| bytes[i - 1] = new byte[1024 * 1024]; |
| System.out.println("Allocated: " + i + "MB!"); |
| } |
| |
| System.out.println("Memory allocated! Total: " + mbytes + "MB! Sleeping..."); |
| for (int i = 0; i < 1000000; ++i) { |
| System.out.println("Thread " + Thread.currentThread() + " sleeping!"); |
| Thread.sleep(10000); |
| } |
| System.out.println("Freeing: " + size + " of bytes. " + bytes); |
| } catch (InterruptedException e) { |
| throw new IllegalStateException("Thread Interrupted!", e); |
| } catch (Throwable e) { |
| e.printStackTrace(); |
| throw e; |
| } |
| |
| } |
| }); |
| |
| System.out.println("Trying to allocate bytes from the thread itself."); |
| final byte[] bytes = new byte[size]; |
| return "Future submitted: " + future + " bytes allocated: " + bytes; |
| } |
| |
| @GET |
| @Path("hello") |
| @Produces("text/plain") |
| public String helloWorld() { |
| System.out.println("HELLO WORLD!"); |
| return "HELLO WORLD!"; |
| } |
| |
| } |