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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 makes simple check that class can be redefined. It creates
* an instance of tested class <code>redefclass001r</code>. Then the test
* invokes native function <code>makeRedefinition()</code>. This native
* function makes class file redifinition of loaded class
* <code>redefclass001r</code>.<br>
* Bytes of new version of the class <code>redefclass001r</code> are taken
* from the <i>./newclass</i> directory.<br>
* Finally, the test checks that the class <code>redefclass001r</code> was
* redefined by invoking new version of its method.
*/
public class redefclass001 {
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("redefclass001");
} catch (UnsatisfiedLinkError e) {
System.err.println("Could not load redefclass001 library");
System.err.println("java.library.path:" +
System.getProperty("java.library.path"));
throw e;
}
}
native static int makeRedefinition(int verbose, 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 redefclass001().runIt(argv, out);
}
private int runIt(String argv[], PrintStream out) {
File newRedefClassFile = null;
byte[] redefClassBytes;
int retValue = 0;
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;
}
redefclass001r redefClsObj = new redefclass001r();
if ((retValue=redefClsObj.checkIt(DEBUG_MODE, out)) == 19) {
if (DEBUG_MODE)
out.println("Successfully invoke method checkIt() of OLD redefclass001r");
} else {
out.println("TEST: failed to invoke method redefclass001r.checkIt()");
return FAILED;
}
// try to redefine class redefclass001r
String fileName = fileDir + File.separator + "newclass" + File.separator +
redefclass001r.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;
}
// make real redefinition
if (DEBUG_MODE)
retValue=makeRedefinition(2, redefClsObj.getClass(),
redefClassBytes);
else
retValue=makeRedefinition(1, redefClsObj.getClass(),
redefClassBytes);
if (retValue != PASSED) {
out.println("TEST: failed to redefine class");
return FAILED;
}
if ((retValue=redefClsObj.checkIt(DEBUG_MODE, out)) == 73) {
if (DEBUG_MODE)
out.println("Successfully invoke method checkIt() of NEW redefclass001r");
return PASSED;
} else {
if (retValue == 19)
out.println("TEST: the method redefclass001r.checkIt() is still old");
else
out.println("TEST: failed to call method redefclass001r.checkIt()");
return FAILED;
}
}
}
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