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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.ClassFileLoadHook;
import java.io.*;
import java.lang.reflect.*;
import nsk.share.*;
import nsk.share.jvmti.*;
/**
* Debuggee class of JVMTI test.
*/
public class classfloadhk006 extends DebugeeClass {
/** Load native library if required. */
static {
System.loadLibrary("classfloadhk006");
}
/** Run test from command line. */
public static void main(String argv[]) {
argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
// JCK-compatible exit
System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);
}
/** Run test from JCK-compatible environment. */
public static int run(String argv[], PrintStream out) {
return new classfloadhk006().runIt(argv, out);
}
/* =================================================================== */
/* constant names */
public static final String PACKAGE_NAME = "nsk.jvmti.ClassFileLoadHook";
public static final String TESTED_CLASS_NAME = PACKAGE_NAME + ".classfloadhk006r";
/* scaffold objects */
ArgumentHandler argHandler = null;
Log log = null;
long timeout = 0;
int status = Consts.TEST_PASSED;
/* bytecode of redefined class */
public static byte redefClassBytes[] = null;
/* tested class to de redefined */
public static Class<?> testedClass = null;
/* tested method name */
public static final String TESTED_METHOD_NAME = "testedStaticMethod";
/* possible values returned by tested method */
public static final long ORIG_VALUE = 20;
public static final long NEW_VALUE = 12;
/** Run debuggee code. */
public int runIt(String argv[], PrintStream out) {
argHandler = new ArgumentHandler(argv);
log = new Log(out, argHandler);
timeout = argHandler.getWaitTime() * 60 * 1000; // milliseconds
String args[] = argHandler.getArguments();
if (args.length <= 0) {
throw new Failure("Path for tested class file to load not specified");
}
String location = args[0];
String redefPath = location + File.separator + "newclass";
log.display("Using path to redefined class: \n\t" + redefPath);
log.display("Reading redefined bytecode of tested class: \n\t" + TESTED_CLASS_NAME);
try {
redefClassBytes = readBytes(redefPath, TESTED_CLASS_NAME);
} catch (IOException e) {
throw new Failure("IOException in reading redefined bytecode of tested class file:\n\t" + e);
}
try {
log.display("Loading original tested class: " + TESTED_CLASS_NAME);
testedClass = Class.forName(TESTED_CLASS_NAME);
} catch (ClassNotFoundException e) {
throw new Failure("Tested class not found: \n\t" + e);
}
log.display("Sync: tested class loaded");
status = checkStatus(status);
log.display("Checking if the tested class was actually redefined");
try {
Method meth = testedClass.getMethod(TESTED_METHOD_NAME, new Class[0]);
Object res = meth.invoke(null, new Object[0]);
if (!(res instanceof Long)) {
log.complain("Tested method of redefined class retured not Long value: " + res);
log.complain("The tested class was redefined incorrectly!");
status = Consts.TEST_FAILED;
} else {
long value = ((Long)res).longValue();
log.display("Tested method of redefined class returned value: " + value);
if (value == ORIG_VALUE) {
log.complain("Tested method of redefined class returned original value: " + value);
log.complain("The tested class was not redefined!");
status = Consts.TEST_FAILED;
} else if (value != NEW_VALUE) {
log.complain("Tested method of redefined class returned unexpected value: " + value);
log.complain("The tested class was redefined incorrectly!");
status = Consts.TEST_FAILED;
} else {
log.display("Tested method of redefined class returned expected new value: " + value);
log.display("The tested class was redefined correctly!");
}
}
} catch (NoSuchMethodException e) {
log.complain("No tested method found in redefined class:\n\t" + e);
status = Consts.TEST_FAILED;
} catch (Exception e) {
log.complain("Exception in invoking method of redefined class:\n\t" + e);
status = Consts.TEST_FAILED;
}
return status;
}
/** Read classfile for specified path and class name. */
public static byte[] readBytes(String path, String classname) throws IOException {
String filename = path + File.separator
+ classname.replace('.', File.separatorChar) + ".class";
FileInputStream in = new FileInputStream(filename);
byte[] bytes = new byte[in.available()];
in.read(bytes);
in.close();
return bytes;
}
}
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