test/hotspot/jtreg/vmTestbase/nsk/jvmti/RedefineClasses/redefclass004.java - platform/libcore - Git at Google

 /*
  * 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 preexisting instance fields of a redefined
  * class will retain their previous values at the completion of
  * the redefinition and any new fields will have their default values.
  */
 public class redefclass004 {
     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("redefclass004");
         } catch (UnsatisfiedLinkError e) {
             System.err.println("Could not load redefclass004 library");
             System.err.println("java.library.path:" +
                 System.getProperty("java.library.path"));
             throw e;
         }
     }

     native static int makeRedefinition(int vrb, Class redefCls,
         byte[] classBytes);
     native static int checkNewFields(int vrb, redefclass004r 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 redefclass004().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;
         }

         redefclass004r redefClsObj = new redefclass004r();
         if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 19) {
             if (DEBUG_MODE) {
                 out.println("Successfully check the OLD version of redefclass004r");
                 out.println("Default values of instance field of the redefined class:");
                 out.println("\tbyteFld = " + redefClsObj.byteFld);
                 out.println("\tshortFld = " + redefClsObj.shortFld);
                 out.println("\tintFld = " + redefClsObj.intFld);
                 out.println("\tlongFld = " + redefClsObj.longFld);
                 out.println("\tfloatFld = " + redefClsObj.floatFld);
                 out.println("\tdoubleFld = " + redefClsObj.doubleFld);
                 out.println("\tcharFld = '" + redefClsObj.charFld + "'");
                 out.println("\tbooleanFld = " + redefClsObj.booleanFld);
                 out.println("\tstringFld = \"" + redefClsObj.stringFld + "\"\n");
             }
         } else {
             out.println("TEST: failed to check the OLD version of redefclass004r");
             out.println("      check CLASSPATH to the file oldclass/redefclass004r.class");
             out.println("      java.class.path: " +
                 System.getProperty("java.class.path"));
             return FAILED;
         }
 // change the values of instance (nonstatic) fields of a redefined class
         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 = "redefclass004r";

 // try to redefine class redefclass004r
         String fileName = fileDir + File.separator + "newclass" + File.separator +
             redefclass004r.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 redefclass004r\n");

 /* Check that preexisting instance (nonstatic) 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("redefclass004r")) {
                 if (DEBUG_MODE)
                     out.println("Check #1 PASSED: Preexisting instance fields " +
                         "of the redefined class retain their previous values\n");
             } else {
                 out.println("TEST FAILED: Preexisting instance fields of the " +
                     "redefined class do not retain their previous values");
                 out.println("Current values of instance field of the redefined class:");
                 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 \"redefclass004r\"\n");
                 totalRes = false;
             }

 /* Check that all new instance (nonstatic) fields of the redefined class
    will have their default values after redefinition */
             if (DEBUG_MODE)
                 retValue=checkNewFields(1, redefClsObj);
             else
                 retValue=checkNewFields(0, redefClsObj);
             if (retValue == PASSED) {
                 if (DEBUG_MODE)
                     out.println("Check #2 PASSED: All new instance " +
                         "fields of the redefined class\n" +
                         "\thave their default values\n");
             } else {
                 out.println("TEST FAILED: New instance fields " +
                     "of the redefined class were not assigned " +
                     "their default value\n");
                 totalRes = false;
             }

         } else {
             if (retValue == 19)
                 out.println("TEST FAILED: the method redefclass004r.checkIt() is still old");
             else
                 out.println("TEST: failed to call method redefclass004r.checkIt()");

             return FAILED;
         }

         if (totalRes) return PASSED;
         else return FAILED;
     }
 }
	/*
	* 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 preexisting instance fields of a redefined
	* class will retain their previous values at the completion of
	* the redefinition and any new fields will have their default values.
	*/
	public class redefclass004 {
	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("redefclass004");
	} catch (UnsatisfiedLinkError e) {
	System.err.println("Could not load redefclass004 library");
	System.err.println("java.library.path:" +
	System.getProperty("java.library.path"));
	throw e;
	}
	}

	native static int makeRedefinition(int vrb, Class redefCls,
	byte[] classBytes);
	native static int checkNewFields(int vrb, redefclass004r 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 redefclass004().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;
	}

	redefclass004r redefClsObj = new redefclass004r();
	if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 19) {
	if (DEBUG_MODE) {
	out.println("Successfully check the OLD version of redefclass004r");
	out.println("Default values of instance field of the redefined class:");
	out.println("\tbyteFld = " + redefClsObj.byteFld);
	out.println("\tshortFld = " + redefClsObj.shortFld);
	out.println("\tintFld = " + redefClsObj.intFld);
	out.println("\tlongFld = " + redefClsObj.longFld);
	out.println("\tfloatFld = " + redefClsObj.floatFld);
	out.println("\tdoubleFld = " + redefClsObj.doubleFld);
	out.println("\tcharFld = '" + redefClsObj.charFld + "'");
	out.println("\tbooleanFld = " + redefClsObj.booleanFld);
	out.println("\tstringFld = \"" + redefClsObj.stringFld + "\"\n");
	}
	} else {
	out.println("TEST: failed to check the OLD version of redefclass004r");
	out.println(" check CLASSPATH to the file oldclass/redefclass004r.class");
	out.println(" java.class.path: " +
	System.getProperty("java.class.path"));
	return FAILED;
	}
	// change the values of instance (nonstatic) fields of a redefined class
	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 = "redefclass004r";

	// try to redefine class redefclass004r
	String fileName = fileDir + File.separator + "newclass" + File.separator +
	redefclass004r.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 redefclass004r\n");

	/* Check that preexisting instance (nonstatic) 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("redefclass004r")) {
	if (DEBUG_MODE)
	out.println("Check #1 PASSED: Preexisting instance fields " +
	"of the redefined class retain their previous values\n");
	} else {
	out.println("TEST FAILED: Preexisting instance fields of the " +
	"redefined class do not retain their previous values");
	out.println("Current values of instance field of the redefined class:");
	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 \"redefclass004r\"\n");
	totalRes = false;
	}

	/* Check that all new instance (nonstatic) fields of the redefined class
	will have their default values after redefinition */
	if (DEBUG_MODE)
	retValue=checkNewFields(1, redefClsObj);
	else
	retValue=checkNewFields(0, redefClsObj);
	if (retValue == PASSED) {
	if (DEBUG_MODE)
	out.println("Check #2 PASSED: All new instance " +
	"fields of the redefined class\n" +
	"\thave their default values\n");
	} else {
	out.println("TEST FAILED: New instance fields " +
	"of the redefined class were not assigned " +
	"their default value\n");
	totalRes = false;
	}

	} else {
	if (retValue == 19)
	out.println("TEST FAILED: the method redefclass004r.checkIt() is still old");
	else
	out.println("TEST: failed to call method redefclass004r.checkIt()");

	return FAILED;
	}

	if (totalRes) return PASSED;
	else return FAILED;
	}
	}