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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>
* properly returns the error <code>JVMTI_ERROR_NULL_POINTER</code>:<br>
* <i>Invalid pointer: classDefs or one of class_bytes is NULL</i><br>
* The test creates a dummy instance of tested class <i>redefclass006r</i>.
* Then the test tries twice to redefine the class <i>redefclass006r</i> by
* sequencely invoking the function <code>RedefineClasses()</code> with:
* <li>NULL pointer to the field <code>class_bytes</code> of the
* structure <code>JVMTI_class_definition</code>
* <li>NULL pointer to the structure <code>JVMTI_class_definition</code>
* by itself.
*/
public class redefclass006 {
static final int PASSED = 0;
static final int FAILED = 2;
static final int JCK_STATUS_BASE = 95;
static boolean DEBUG_MODE = false;
private PrintStream out;
static {
try {
System.loadLibrary("redefclass006");
} catch (UnsatisfiedLinkError e) {
System.err.println("Could not load redefclass006 library");
System.err.println("java.library.path:" +
System.getProperty("java.library.path"));
throw e;
}
}
native static int makeRedefinition(int vrb, Class redefClass,
byte[] classBytes);
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 redefclass006().runIt(argv, out);
}
private int runIt(String argv[], PrintStream out) {
File newRedefClassFile = null;
byte[] redefClassBytes;
int totRes = PASSED;
int retValue = 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;
}
redefclass006r redefClsObj = new redefclass006r();
if (redefClsObj.checkIt(out, DEBUG_MODE) == 19) {
if (DEBUG_MODE)
out.println("Successfully check the class redefclass006r");
} else {
out.println("TEST: failed to check the class redefclass006r");
return FAILED;
}
// try to redefine class redefclass006r
String fileName =
redefclass006r.class.getName().replace('.', File.separatorChar) +
".class";
if (DEBUG_MODE)
out.println("Trying to redefine class from the file: " + fileName);
try {
ClassLoader cl = redefclass006.class.getClassLoader();
InputStream in = cl.getSystemResourceAsStream(fileName);
if (in == null) {
out.println("# Class file \"" + fileName + "\" not found");
return FAILED;
}
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;
}
/* check that if RedefineClasses() is invoked with NULL pointer to
the field JVMTI_class_definition.class_bytes, it will return
the error JVMTI_ERROR_NULL_POINTER */
if (DEBUG_MODE)
totRes = retValue = makeRedefinition(3,
redefClsObj.getClass(), redefClassBytes);
else
totRes = retValue = makeRedefinition(2,
redefClsObj.getClass(), redefClassBytes);
if (DEBUG_MODE && retValue == PASSED)
out.println("Check #1 PASSED:\n" +
"\tRedefineClasses() being invoked with NULL pointer " +
"to the JVMTI_class_definition.class_bytes,\n" +
"\treturned the appropriate error JVMTI_ERROR_NULL_POINTER");
/* check that RedefineClasses() is invoked with NULL pointer to
the JVMTI structure JVMTI_class_definition, it will return
the error JVMTI_ERROR_NULL_POINTER */
if (DEBUG_MODE)
retValue = makeRedefinition(1,
redefClsObj.getClass(), redefClassBytes);
else
retValue = makeRedefinition(0,
redefClsObj.getClass(), redefClassBytes);
if (retValue == FAILED)
totRes = FAILED;
else {
if (DEBUG_MODE)
out.println("\nCheck #2 PASSED:\n" +
"\tRedefineClasses() being invoked with NULL pointer " +
"to the JVMTI structure JVMTI_class_definition,\n" +
"\treturned the appropriate error JVMTI_ERROR_NULL_POINTER");
}
return totRes;
}
}
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