2 * Copyright 2000-2009 JetBrains s.r.o.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package com.intellij.openapi.vcs;
18 import com.intellij.openapi.project.Project;
20 public abstract class ThreadLocalDefendedInvoker<T> {
21 protected final static ThreadLocal<Boolean> myThreadLocal = new ThreadLocal<Boolean>() {
23 protected Boolean initialValue() {
28 protected abstract T execute(Project project);
30 public static boolean isInside() {
31 return ! Boolean.TRUE.equals(myThreadLocal.get());
34 public static boolean isOutside() {
38 public T executeDefended(Project project) {
40 myThreadLocal.set(Boolean.FALSE);
41 return execute(project);
43 myThreadLocal.set(Boolean.TRUE);