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/*
* Copyright (c) 2003, 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.RedefineClasses;
import java.io.*;
/**
* This test checks that the JVMTI function <code>RedefineClasses()</code>
* updates the attribute <i>LocalVariableTable</i> of the redefined class.
* Note, that all tested classes should be compiled with debugging info.
* The test creates a dummy instance of tested class <code>redefclass009r</code>
* Then the test redefines this class. Bytes of new version of the class
* <code>redefclass009r</code> are taken from the directory <i>./newclass_g</i>.
* Finally, the test checks that <i>LocalVariableTable</i>, one of the two
* attributes, accessible in JVMTI (<i>LineNumberTable</i> and
* <i>LocalVariableTable</i>), was updated after the redefinition.
*/
public class redefclass009 {
static final int PASSED = 0;
static final int FAILED = 2;
static final int JCK_STATUS_BASE = 95;
static boolean DEBUG_MODE = false;
static String fileDir = ".";
private PrintStream out;
static {
try {
System.loadLibrary("redefclass009");
} catch (UnsatisfiedLinkError e) {
System.err.println("Could not load redefclass009 library");
System.err.println("java.library.path:" +
System.getProperty("java.library.path"));
throw e;
}
}
native static int makeRedefinition(int vrb, Class redefClass,
byte[] classBytes);
native static int checkOrigAttr(redefclass009r redefClsObj);
native static int getResult(int vrb, redefclass009r redefClsObj);
public static void main(String[] argv) {
argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
System.exit(run(argv, System.out) + JCK_STATUS_BASE);
}
public static int run(String argv[], PrintStream out) {
return new redefclass009().runIt(argv, out);
}
private int runIt(String argv[], PrintStream out) {
File newRedefClassFile = null;
byte[] redefClassBytes;
int retValue = PASSED;
int totRes = PASSED;
this.out = out;
for (int i = 0; i < argv.length; i++) {
String token = argv[i];
if (token.equals("-v")) // verbose mode
DEBUG_MODE = true;
else
fileDir = token;
}
redefclass009r redefClsObj = new redefclass009r();
if (redefClsObj.checkIt(out, DEBUG_MODE) == 19) {
if (DEBUG_MODE)
out.println("Successfully check the class redefclass009r");
} else {
out.println("TEST: failed to check the class redefclass009r");
return FAILED;
}
// check the original attributes of the redefined class redefclass009r
if ((retValue = checkOrigAttr(redefClsObj)) == FAILED)
return FAILED;
// try to redefine the class redefclass009r
String fileName = fileDir + File.separator + "newclass_g" + File.separator +
redefclass009r.class.getName().replace('.', File.separatorChar) +
".class";
if (DEBUG_MODE)
out.println("Trying to redefine class from the file: " + fileName);
try {
FileInputStream in = new FileInputStream(fileName);
redefClassBytes = new byte[in.available()];
in.read(redefClassBytes);
in.close();
} catch (Exception ex) {
out.println("# Unexpected exception while reading class file:");
out.println("# " + ex);
return FAILED;
}
if (DEBUG_MODE)
retValue = makeRedefinition(1,
redefClsObj.getClass(), redefClassBytes);
else
retValue = makeRedefinition(0,
redefClsObj.getClass(), redefClassBytes);
if (retValue == FAILED)
return FAILED;
if ((retValue = redefClsObj.checkIt(out, DEBUG_MODE)) == 73) {
if (DEBUG_MODE)
out.println("Successfully check new version of the redefined class");
} else {
out.println("TEST FAILED:\n" +
"\tthe class redefclass009r was not redefined: checkIt() returned " +
retValue);
return FAILED;
}
/* check that LocalVariableTable in the redefined class redefclass009r
was updated */
if (DEBUG_MODE)
return getResult(1, redefClsObj);
else return getResult(0, redefClsObj);
}
}
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