| /* |
| * Copyright (c) 2014, 2020 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: |
| // Marcel Valovy - 2.6 - initial API and implementation |
| package org.eclipse.persistence.testing.perf.reflection; |
| |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.ThreadMXBean; |
| import java.lang.ref.SoftReference; |
| import java.lang.reflect.Field; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.ArrayList; |
| import java.util.Deque; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.concurrent.ConcurrentLinkedDeque; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| /** |
| * INTERNAL: |
| * |
| * Utility class for bean validation related tasks. |
| * - Singleton. |
| * - Thread-safe. |
| */ |
| enum ThreadLocalReflectionUtils { |
| UTILS; |
| |
| private int random = 0; |
| |
| Field[] getDeclaredFieldsTL(Class<?> clazz) { |
| return PrivilegedAccessHelper.shouldUsePrivilegedAccess() |
| ? AccessController.doPrivileged(threadLocal.get()) |
| : getDeclaredFieldsInternal(clazz); |
| } |
| |
| ThreadLocal<PrivilegedAction<Field[]>> threadLocal = new ThreadLocal<PrivilegedAction<Field[]>>(){ |
| @Override |
| protected PrivilegedAction<Field[]> initialValue() { |
| return new PrivilegedAction<Field[]>() { |
| @Override |
| public Field[] run() { |
| return random++ % 2 == 1 ? String.class.getDeclaredFields() : Boolean.class.getDeclaredFields(); |
| } |
| }; |
| } |
| }; |
| |
| |
| /** |
| * INTERNAL: |
| */ |
| private static Field[] getDeclaredFieldsInternal(Class<?> clazz) { |
| return clazz.getDeclaredFields(); |
| } |
| |
| } |