001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020 package org.apache.directory.shared.ldap.util; 021 022 023 import java.io.PipedInputStream; 024 import java.io.IOException; 025 026 027 /** 028 * A piped input stream that fixes the "Read end Dead" issue when a single 029 * thread is used. 030 * 031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 032 * @version $Rev: 437007 $ 033 */ 034 public class ParserPipedInputStream extends PipedInputStream 035 { 036 protected synchronized void receive( int b ) throws IOException 037 { 038 while ( in == out ) 039 { 040 /* full: kick any waiting readers */ 041 notifyAll(); 042 try 043 { 044 wait( 1000 ); 045 } 046 catch ( InterruptedException ex ) 047 { 048 throw new java.io.InterruptedIOException(); 049 } 050 } 051 052 if ( in < 0 ) 053 { 054 in = 0; 055 out = 0; 056 } 057 058 buffer[in++] = ( byte ) ( b & 0xFF ); 059 060 if ( in >= buffer.length ) 061 { 062 in = 0; 063 } 064 } 065 }