124 lines
4.3 KiB
Java
124 lines
4.3 KiB
Java
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package nsk.jvmti.RedefineClasses;
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import java.io.*;
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/**
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* This test checks that a class can be redefined and<br>
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* no JVMTI events are generated by the JVMTI function
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* <code>RedefineClasses()</code>.<br>
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* The test creates an instance of tested class <code>redefclass031r</code>.
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* Then the test makes classfile redifinition of the loaded class
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* <code>redefclass031r</code>.<br>
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* Bytes defining new version of the class <code>redefclass031r</code>
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* are taken from the same classfile, i.e. actually the new version
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* is identical with the old version.
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*/
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public class redefclass031 {
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static final int PASSED = 0;
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static final int FAILED = 2;
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static final int JCK_STATUS_BASE = 95;
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static boolean DEBUG_MODE = false;
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private PrintStream out;
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static {
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try {
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System.loadLibrary("redefclass031");
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} catch (UnsatisfiedLinkError e) {
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System.err.println("Could not load redefclass031 library");
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System.err.println("java.library.path:" +
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System.getProperty("java.library.path"));
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throw e;
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}
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}
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native static int makeRedefinition(int vrb, Class redefClass,
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byte[] classBytes);
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public static void main(String[] argv) {
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argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
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System.exit(run(argv, System.out) + JCK_STATUS_BASE);
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}
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public static int run(String argv[], PrintStream out) {
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return new redefclass031().runIt(argv, out);
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}
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private int runIt(String argv[], PrintStream out) {
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File newRedefClassFile = null;
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byte[] redefClassBytes;
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this.out = out;
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for (int i = 0; i < argv.length; i++) {
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String token = argv[i];
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if (token.equals("-v")) // verbose mode
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DEBUG_MODE = true;
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}
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redefclass031r redefClsObj = new redefclass031r();
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if (redefClsObj.checkIt(out, DEBUG_MODE) == 19) {
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if (DEBUG_MODE)
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out.println("Successfully check the class redefclass031r");
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} else {
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out.println("TEST: failed to check the class redefclass031r");
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return FAILED;
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}
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// try to redefine class redefclass031r
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String fileName =
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redefclass031r.class.getName().replace('.', File.separatorChar) +
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".class";
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if (DEBUG_MODE)
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out.println("Trying to redefine class from the file: " + fileName);
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try {
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ClassLoader cl = redefclass031.class.getClassLoader();
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InputStream in = cl.getSystemResourceAsStream(fileName);
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if (in == null) {
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out.println("# Class file \"" + fileName + "\" not found");
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return FAILED;
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}
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redefClassBytes = new byte[in.available()];
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in.read(redefClassBytes);
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in.close();
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} catch (Exception ex) {
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out.println("# Unexpected exception while reading class file:");
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out.println("# " + ex);
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return FAILED;
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}
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// make real redefinition
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if (DEBUG_MODE)
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return makeRedefinition(1, redefClsObj.getClass(),
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redefClassBytes);
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else
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return makeRedefinition(0, redefClsObj.getClass(),
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redefClassBytes);
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}
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}
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