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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 values of preexisting static variables of
* the redefined class will remain as they were prior to the redifinition;<br>
* check that completely uninitialized (new) static variables will be
* assigned their default value.
*/
public class redefclass003 {
static final int PASSED = 0;
static final int FAILED = 2;
static final int NO_RESULTS = 3;
static final int JCK_STATUS_BASE = 95;
static boolean DEBUG_MODE = false;
static String fileDir = ".";
private PrintStream out;
static {
try {
System.loadLibrary("redefclass003");
} catch (UnsatisfiedLinkError e) {
System.err.println("Could not load redefclass003 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 checkNewFields(int vrb, Class redefClass);
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 redefclass003().runIt(argv, out);
}
private int runIt(String argv[], PrintStream out) {
File newRedefClassFile = null;
byte[] redefClassBytes;
int retValue = 0;
boolean totalRes = true;
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;
}
redefclass003r redefClsObj = new redefclass003r();
if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 19 &&
redefClsObj.byteFld == 1 && redefClsObj.shortFld == 2 &&
redefClsObj.intFld == 3 && redefClsObj.longFld == 4L &&
redefClsObj.floatFld == 5.1F && redefClsObj.doubleFld == 6.0D &&
redefClsObj.charFld == 'a' && redefClsObj.booleanFld == false &&
redefClsObj.stringFld.equals("OLD redefclass003r")) {
if (DEBUG_MODE)
out.println("Successfully check the OLD version of redefclass003r");
} else {
out.println("TEST: failed to check the OLD version of redefclass003r");
return FAILED;
}
// try to redefine class redefclass003r
String fileName = fileDir + File.separator + "newclass" + File.separator +
redefclass003r.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(1, redefClsObj.getClass(),
redefClassBytes);
else
retValue=makeRedefinition(0, redefClsObj.getClass(),
redefClassBytes);
switch (retValue) {
case FAILED:
out.println("TEST: failed to redefine class");
return FAILED;
case NO_RESULTS:
return PASSED;
case PASSED:
break;
}
if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 73) {
if (DEBUG_MODE)
out.println("Successfully check the NEW version of redefclass003r\n");
/* Check that preexisting fields of the redefined class retain their
previous values after the redefinition */
if (redefClsObj.byteFld == 1 && redefClsObj.shortFld == 2 &&
redefClsObj.intFld == 3 && redefClsObj.longFld == 4L &&
redefClsObj.floatFld == 5.1F && redefClsObj.doubleFld == 6.0D &&
redefClsObj.charFld == 'a' && redefClsObj.booleanFld == false &&
redefClsObj.stringFld.equals("OLD redefclass003r")) {
if (DEBUG_MODE)
out.println("Check #1 PASSED: Preexisting static fields of the " +
"redefined class retain their previous values\n");
} else {
out.println("TEST FAILED: Preexisting static fields of the " +
"redefined class do not retain their previous values");
out.println("Current static field values of the redefined class:\n");
out.println("\tbyteFld = " + redefClsObj.byteFld +
",\texpected 1");
out.println("\tshortFld = " + redefClsObj.shortFld +
",\texpected 2");
out.println("\tintFld = " + redefClsObj.intFld +
",\texpected 3");
out.println("\tlongFld = " + redefClsObj.longFld +
",\texpected 4");
out.println("\tfloatFld = " + redefClsObj.floatFld +
",\texpected 5.1");
out.println("\tdoubleFld = " + redefClsObj.doubleFld +
",\texpected 6.0");
out.println("\tcharFld = '" + redefClsObj.charFld +
"',\texpected 'a'");
out.println("\tbooleanFld = " + redefClsObj.booleanFld +
",\texpected false");
out.println("\tstringFld = \"" + redefClsObj.stringFld +
"\"\texpected \"OLD redefclass003r\"\n");
totalRes = false;
}
/* Check that all completely uninitialized (new) static variables
were assigned their default value after redefinition */
if (DEBUG_MODE)
retValue=checkNewFields(1, redefClsObj.getClass());
else
retValue=checkNewFields(0, redefClsObj.getClass());
if (retValue == PASSED) {
if (DEBUG_MODE)
out.println("Check #2 PASSED: All completely uninitialized " +
"static variables of the redefined class\n" +
"\twere assigned their default value\n");
} else {
out.println("TEST FAILED: Completely uninitialized static " +
"variables of the redefined class were not assigned " +
"their default value\n");
totalRes = false;
}
} else {
if (retValue == 19)
out.println("TEST FAILED: the method redefclass003r.checkIt() is still old");
else
out.println("TEST: failed to call method redefclass003r.checkIt()");
return FAILED;
}
if (totalRes) return PASSED;
else return FAILED;
}
}
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