| /* |
| * Copyright (c) 1998, 2021 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, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.tests.clientserver; |
| |
| import org.eclipse.persistence.testing.framework.*; |
| import org.eclipse.persistence.sessions.*; |
| import org.eclipse.persistence.exceptions.*; |
| import org.eclipse.persistence.sessions.DatabaseLogin; |
| |
| @SuppressWarnings("deprecation") |
| public class ConcurrentTestWithReadLocks extends org.eclipse.persistence.testing.framework.AutoVerifyTestCase { |
| public static int numThreads = 8; |
| public boolean isCheckerThread; |
| public static Server server; |
| public static boolean execute = true; |
| public static Thread[] threadList = new Thread[numThreads]; |
| public static long[] timeList = new long[numThreads]; |
| public static long runTime; |
| public int index; |
| |
| public ConcurrentTestWithReadLocks(long runtime) { |
| setDescription("Test Simulates a highly concurrent situation with ReadLocks"); |
| ConcurrentTestWithReadLocks.runTime = runtime; |
| } |
| |
| protected ConcurrentTestWithReadLocks(boolean checkerThread, int index) { |
| this.isCheckerThread = checkerThread; |
| this.index = index; |
| } |
| |
| @Override |
| public void reset() { |
| ConcurrentTestWithReadLocks.execute = false; |
| for (int count = 0; count < numThreads; ++count) { |
| try { |
| ConcurrentTestWithReadLocks.threadList[count].join(); |
| } catch (InterruptedException ex) { |
| throw new TestProblemException("Test thread was interrupted. Test failed to run properly"); |
| } |
| } |
| ConcurrentTestWithReadLocks.server.logout(); |
| } |
| |
| @Override |
| public void setup() { |
| ConcurrentTestWithReadLocks.execute = true; |
| try { |
| getSession().getLog().write("WARNING, some tests may take 3 minutes or more"); |
| getSession().getLog().flush(); |
| } catch (java.io.IOException e) { |
| } |
| |
| try { |
| DatabaseLogin login = (DatabaseLogin)getSession().getLogin().clone(); |
| ConcurrentTestWithReadLocks.server = new Server(login, numThreads, numThreads + 2); |
| ConcurrentTestWithReadLocks.server.serverSession.setSessionLog(getSession().getSessionLog()); |
| ConcurrentTestWithReadLocks.server.login(); |
| ConcurrentTestWithReadLocks.server.copyDescriptors(getSession()); |
| } catch (ValidationException ex) { |
| this.verify(); |
| } |
| |
| for (int count = 0; count < numThreads; ++count) { |
| ConcurrentTestWithReadLocks.threadList[count] = new Thread(new ConcurrentTestWithReadLocks(false, count).runnable()); |
| ConcurrentTestWithReadLocks.timeList[count] = System.currentTimeMillis(); |
| } |
| } |
| |
| @Override |
| public void test() { |
| for (int count = 0; count < numThreads; ++count) { |
| ConcurrentTestWithReadLocks.threadList[count].start(); |
| } |
| |
| Thread checker = new Thread(new ConcurrentTestWithReadLocks(true, -1).runnable()); |
| checker.start(); |
| try { |
| checker.join(); |
| } catch (InterruptedException ex) { |
| throw new TestProblemException("Test thread was interrupted. Test failed to run properly"); |
| } |
| } |
| |
| @Override |
| public void verify() { |
| if (!execute) { |
| for (int count = 0; count < numThreads; ++count) { |
| threadList[count].stop(); |
| } |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| throw new TestErrorException("This test caused a deadlock in TopLink. see bug 3049635"); |
| } |
| } |
| |
| public Runnable runnable() { |
| return new Runnable() { |
| // This section represents the executing threads |
| // If the type is set to checker then this set the thread |
| // to watch the other threads for deadlock. If none occurs then |
| // the test will time out. |
| @Override |
| public void run() { |
| if (org.eclipse.persistence.testing.tests.clientserver.ConcurrentTestWithReadLocks.this.isCheckerThread) { |
| watchOtherThreads(); |
| } else { |
| executeUntilStopped(); |
| } |
| } |
| }; |
| } |
| |
| public void watchOtherThreads() { |
| long startTime = System.currentTimeMillis(); |
| while (((System.currentTimeMillis() - startTime) < (runTime + 30000)) && ConcurrentTestWithReadLocks.execute) { |
| for (int localIdex = 0; localIdex < numThreads; ++localIdex) { |
| if ((System.currentTimeMillis() - ConcurrentTestWithReadLocks.timeList[localIdex]) > 30000) { |
| execute = false; |
| break; |
| } |
| } |
| try { |
| Thread.sleep(30000); |
| } catch (InterruptedException ex) { |
| throw new TestProblemException("Test thread was interrupted. Test failed to run properly"); |
| } |
| } |
| } |
| |
| public void executeUntilStopped() { |
| Session session = ConcurrentTestWithReadLocks.server.serverSession.acquireClientSession(); |
| DeadLockEmployee employee = (DeadLockEmployee)session.readObject(DeadLockEmployee.class); |
| |
| // session.release(); |
| while (ConcurrentTestWithReadLocks.execute) { |
| // session = this.server.serverSession.acquireClientSession(); |
| ConcurrentTestWithReadLocks.timeList[this.index] = System.currentTimeMillis(); |
| |
| /* Aquire Unit Of Work */ |
| UnitOfWork uow = session.acquireUnitOfWork(); |
| |
| /* Register */ |
| DeadLockEmployee workingEmp = (DeadLockEmployee)uow.registerObject(employee); |
| |
| /* make an Refresh */ |
| uow.refreshObject(workingEmp); |
| uow.commit(); |
| } |
| } |
| } |