| /* |
| * 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.felix.service.threadio; |
| |
| import java.io.InputStream; |
| import java.io.PrintStream; |
| |
| /** |
| * Enable multiplexing of the standard IO streams for input, output, and error. |
| * <p> |
| * This service guards the central resource of IO streams. The standard streams |
| * are singletons. This service replaces the singletons with special versions that |
| * can find a unique stream for each thread. If no stream is associated with a |
| * thread, it will use the standard input/output that was originally set. |
| * |
| * @author aqute |
| */ |
| public interface ThreadIO |
| { |
| /** |
| * Associate this streams with the current thread. |
| * <p> |
| * Ensure that when output is performed on System.in, System.out, System.err it |
| * will happen on the given streams. |
| * <p> |
| * The streams will automatically be canceled when the bundle that has gotten |
| * this service is stopped or returns this service. |
| * |
| * @param in InputStream to use for the current thread when System.in is used |
| * @param out PrintStream to use for the current thread when System.out is used |
| * @param err PrintStream to use for the current thread when System.err is used |
| */ |
| void setStreams(InputStream in, PrintStream out, PrintStream err); |
| |
| /** |
| * Cancel the streams associated with the current thread. |
| * <p> |
| * This method will not do anything when no streams are associated. |
| */ |
| void close(); |
| } |