/* * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package nsk.jvmti.AttachOnDemand.attach010; import nsk.share.aod.AbstractJarAgent; import java.io.*; import java.lang.instrument.Instrumentation; public class attach010Agent00 extends AbstractJarAgent { private static final String outStreamFileName = "AttachOnDemand.attach010.out"; private static final String errStreamFileName = "AttachOnDemand.attach010.err"; private static final String inStreamFileName = "AttachOnDemand.attach010.in"; protected void agentActions() throws Throwable { PrintStream newOutStream = new PrintStream(outStreamFileName); PrintStream newErrStream = new PrintStream(errStreamFileName); System.setOut(newOutStream); System.out.println("Print to the new System.out"); System.setErr(newErrStream); System.err.println("Print to the new System.err"); /* * Check input stream */ final int valueToWrite = 100; PrintStream inputFileStream = new PrintStream(inStreamFileName); try { inputFileStream.println(valueToWrite); } finally { inputFileStream.close(); } FileInputStream newInputStream = new FileInputStream(inStreamFileName); System.setIn(newInputStream); BufferedReader inputStreamReader = new BufferedReader(new InputStreamReader(System.in)); int readValue = Integer.parseInt(inputStreamReader.readLine()); if (readValue != valueToWrite) { setStatusFailed("Unexpected value was read from input stream: " + readValue + ", expected value is " + valueToWrite); } } public static void agentmain(String options, Instrumentation inst) { new attach010Agent00().runJarAgent(options, inst); } }