2 * Copyright 2006 the original author or authors.
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.wamblee.socketproxy;
18 public class Barrier {
20 private int _countLeft;
22 public Barrier( int aCount ) {
26 public synchronized void block( ) {
28 if ( _countLeft < 0 ) {
29 throw new IllegalStateException(
30 "Barrier count became negative, programming error" );
33 while ( _countLeft > 0 ) {
34 waitUninterruptable( );
38 private void waitUninterruptable( ) {
41 } catch ( InterruptedException e ) {