| /* |
| * 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.openejb.core.ivm; |
| |
| public class IntraVmCopyMonitor { |
| public static enum State { |
| NONE, COPY(true), CLASSLOADER_COPY(true), PASSIVATION; |
| |
| private final boolean copy; |
| |
| State() { |
| this.copy = false; |
| } |
| |
| State(boolean copy) { |
| this.copy = copy; |
| } |
| |
| public boolean isCopy() { |
| return copy; |
| } |
| } |
| |
| private static final ThreadLocal<IntraVmCopyMonitor> threadMonitor = new ThreadLocal<IntraVmCopyMonitor>(); |
| |
| private State state = State.NONE; |
| |
| private IntraVmCopyMonitor() { |
| } |
| |
| public static boolean exists() { |
| return (threadMonitor.get() != null); |
| } |
| |
| public static void release() { |
| threadMonitor.set(null); |
| } |
| |
| private static IntraVmCopyMonitor getMonitor() { |
| IntraVmCopyMonitor monitor = threadMonitor.get(); |
| if (monitor == null) { |
| monitor = new IntraVmCopyMonitor(); |
| threadMonitor.set(monitor); |
| } |
| return monitor; |
| } |
| |
| public static void pre(State state){ |
| getMonitor().state = state; |
| } |
| |
| public static void post() { |
| pre(State.NONE); |
| } |
| |
| public static State state(){ |
| return getMonitor().state; |
| } |
| |
| public static void prePassivationOperation() { |
| pre(State.PASSIVATION); |
| } |
| |
| public static void postPassivationOperation() { |
| post(); |
| } |
| |
| public static void preCrossClassLoaderOperation() { |
| pre(State.CLASSLOADER_COPY); |
| } |
| |
| public static void postCrossClassLoaderOperation() { |
| post(); |
| } |
| |
| public static void preCopyOperation() { |
| pre(State.COPY); |
| } |
| |
| public static void postCopyOperation() { |
| post(); |
| } |
| |
| public static boolean isIntraVmCopyOperation() { |
| return state() == State.COPY; |
| } |
| |
| public static boolean isStatefulPassivationOperation() { |
| return state() == State.PASSIVATION; |
| } |
| |
| public static boolean isCrossClassLoaderOperation() { |
| return state() == State.CLASSLOADER_COPY; |
| } |
| } |