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 org
.jetbrains
.idea
.svn
;
18 public class ReentranceDefence
{
19 protected final ThreadLocal
<Boolean
> myThreadLocal
;
21 protected ReentranceDefence() {
22 myThreadLocal
= new ThreadLocal
<Boolean
>() {
24 protected Boolean
initialValue() {
30 public static <T
> T
executeReentrant(final ReentranceDefence defence
, final MyControlled
<T
> controlled
) {
31 if (defence
.isInside()) {
32 return controlled
.executeMeSimple();
34 return controlled
.executeMe();
37 public boolean isInside() {
38 return ! Boolean
.TRUE
.equals(myThreadLocal
.get());
41 public boolean isOutside() {
45 public void executeOtherDefended(final Runnable runnable
) {
47 myThreadLocal
.set(Boolean
.FALSE
);
50 myThreadLocal
.set(Boolean
.TRUE
);
54 public interface MyControlled
<T
> {