339 lines
12 KiB
Java
339 lines
12 KiB
Java
/*
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* Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package nsk.jdi.VirtualMachine.redefineClasses;
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import nsk.share.*;
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import nsk.share.jpda.*;
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import nsk.share.jdi.*;
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import com.sun.jdi.*;
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import com.sun.jdi.request.*;
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import com.sun.jdi.event.*;
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import java.util.*;
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import java.io.*;
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/**
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* The test checks up <code>com.sun.jdi.VirtualMachine.redefineClasses()</code>
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* in case when redefined class loaded by a custom loader.
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*
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* The test perform next steps: <br>
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* 1. Debugee loads a tested class by the custom loader. <br>
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* 2. When getting <code>ClassPrepareEvent</code>, debugger checks class
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* loader of tested class to be the custom class loader and creates
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* <code>MethodEntryRequest</code> for tested class and waits
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* a corresponding event. <br>
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* 3. Debugee calls a method of the tested class. <br>
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* 4. After getting <code>MethodEntryEvent</code>, debugger redefines
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* the tested class and checks the redefinition to be successful. <br>
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*
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* The above steps are performed for two cases, when the custom loader
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* extends <code>java.net.URLClassLoader</code> and when the custom loader directly
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* extends <code>java.lang.ClassLoader</code>.
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*/
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public class redefineclasses035 {
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public final static String UNEXPECTED_STRING = "***Unexpected exception ";
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private final static String prefix = "nsk.jdi.VirtualMachine.redefineClasses.";
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private final static String debuggerName = prefix + "redefineclasses035";
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public final static String debugeeName = debuggerName + "a";
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public final static int TESTCASE_NUMBER = 2;
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public final static String [] testedClassName = {
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debuggerName + "b",
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debuggerName + "c"
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};
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private final static String [] expectedClsLdrs = {
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debugeeName + "ClassLoaderB",
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debugeeName + "ClassLoaderC"
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};
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static final String redefinedMethodName = "justMethod";
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private final static String PATH = "newclass" + File.separator
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+ prefix.replace('.',File.separatorChar);
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private final static String [] newClassFile = {
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PATH + "redefineclasses035b.class",
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PATH + "redefineclasses035c.class"
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};
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private static int exitStatus;
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private static Log log;
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private static Debugee debugee;
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private static long waitTime;
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private static String classDir;
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private int expectedEventCount = 4;
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private int currentCase = -1;
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private ReferenceType testedClass, debugeeClass;
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private static void display(String msg) {
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log.display(msg);
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}
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private static void complain(String msg) {
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log.complain(msg + "\n");
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}
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public static void main(String argv[]) {
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int result = run(argv,System.out);
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if (result != 0) {
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throw new RuntimeException("TEST FAILED with result " + result);
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}
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}
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public static int run(String argv[], PrintStream out) {
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exitStatus = Consts.TEST_PASSED;
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redefineclasses035 thisTest = new redefineclasses035();
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ArgumentHandler argHandler = new ArgumentHandler(argv);
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log = new Log(out, argHandler);
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classDir = argv[0];
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waitTime = argHandler.getWaitTime() * 60000;
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Binder binder = new Binder(argHandler, log);
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debugee = binder.bindToDebugee(debugeeName);
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debugee.redirectOutput(log);
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try {
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thisTest.execTest();
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} catch (Throwable e) {
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exitStatus = Consts.TEST_FAILED;
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e.printStackTrace();
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} finally {
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debugee.endDebugee();
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}
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display("Test finished. exitStatus = " + exitStatus);
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return exitStatus;
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}
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private void execTest() throws Failure {
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if (!debugee.VM().canRedefineClasses()) {
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display("\n>>>canRedefineClasses() is false<<< test canceled.\n");
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return;
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}
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display("\nTEST BEGINS");
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display("===========");
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EventSet eventSet = null;
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EventIterator eventIterator = null;
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Event event;
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long totalTime = waitTime;
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long tmp, begin = System.currentTimeMillis(),
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delta = 0;
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boolean exit = false;
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int eventCount = 0;
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EventRequestManager evm = debugee.getEventRequestManager();
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ClassPrepareRequest req = evm.createClassPrepareRequest();
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req.addClassFilter(debuggerName + "*");
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req.addClassExclusionFilter(debugeeName + "Class*");
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req.addClassExclusionFilter(debuggerName);
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req.enable();
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debugee.resume();
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while (totalTime > 0 && !exit) {
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if (eventIterator == null || !eventIterator.hasNext()) {
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try {
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eventSet = debugee.VM().eventQueue().remove(totalTime);
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} catch (InterruptedException e) {
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new Failure(e);
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}
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if (eventSet != null) {
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eventIterator = eventSet.eventIterator();
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} else {
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eventIterator = null;
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}
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}
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if (eventIterator != null) {
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while (eventIterator.hasNext()) {
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event = eventIterator.nextEvent();
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display("\nevent ===>>> " + event);
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if (event instanceof ClassPrepareEvent) {
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testedClass = ((ClassPrepareEvent )event).referenceType();
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String className = testedClass.name();
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if (className.compareTo(debugeeName) == 0) {
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prepareTestCases();
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} else {
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createMethodEntryRequest(currentCase);
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}
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debugee.resume();
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} else if (event instanceof BreakpointEvent) {
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currentCase++;
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display("\ntestcase " + (currentCase + 1));
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display("===========");
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debugee.resume();
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} else if (event instanceof MethodEntryEvent) {
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checkCase((MethodEntryEvent )event);
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eventCount++;
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debugee.resume();
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} else if (event instanceof VMDeathEvent) {
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exit = true;
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break;
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} else if (event instanceof VMDisconnectEvent) {
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exit = true;
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break;
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} // if
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} // while
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} // if
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tmp = System.currentTimeMillis();
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delta = tmp - begin;
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totalTime -= delta;
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begin = tmp;
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}
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if (totalTime <= 0) {
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complain("out of wait time...");
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exitStatus = Consts.TEST_FAILED;
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}
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if (eventCount != expectedEventCount) {
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complain("expecting " + expectedEventCount
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+ " events, but "
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+ eventCount + " events arrived.");
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exitStatus = Consts.TEST_FAILED;
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}
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display("=============");
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display("TEST FINISHES\n");
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}
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private void checkCase(MethodEntryEvent event) {
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Method mthd = getCurrentMethod(event.thread());
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if (mthd.isConstructor()) {
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display("it is constructor (skipped)");
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return;
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}
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display("\nredefining...");
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redefineDebugee(newClassFile[currentCase]);
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mthd = getCurrentMethod(event.thread());
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if (mthd.isObsolete()) {
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display("!!!method is obsolete!!!");
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display("redefinition is OK");
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event.request().disable();
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display("MethodEntryEvent is being disabled");
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} else {
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complain("method is not obsolete");
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complain("redefinition was not OK");
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exitStatus = Consts.TEST_FAILED;
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}
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display("");
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return;
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}
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private MethodEntryRequest createMethodEntryRequest(int index) {
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display("\nclasses info on debugger side:");
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display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
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display("testedClass\t:" + testedClassName[currentCase]);
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String clsLdrName = testedClass.classLoader().referenceType().name();
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String clsLdrName4Debugee = debugeeClass.classLoader().referenceType().name();
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display("class loader\t:" + clsLdrName);
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display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
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if (clsLdrName.compareTo(expectedClsLdrs[currentCase]) != 0) {
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complain("wrong class loader \"" + clsLdrName
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+ "\"\n\tfor \"" + testedClassName[currentCase] + "\"");
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exitStatus = Consts.TEST_FAILED;
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}
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EventRequestManager evm = debugee.getEventRequestManager();
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MethodEntryRequest request = evm.createMethodEntryRequest();
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request.addClassFilter(testedClassName[index]);
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request.enable();
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return request;
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}
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private void redefineDebugee(String classFileName) {
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Map<? extends com.sun.jdi.ReferenceType,byte[]> mapBytes;
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boolean alreadyComplained = false;
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mapBytes = mapClassToBytes(classDir + File.separator + classFileName);
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try {
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debugee.VM().redefineClasses(mapBytes);
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} catch (Exception e) {
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throw new Failure(UNEXPECTED_STRING + e);
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}
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}
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private Map<? extends com.sun.jdi.ReferenceType,byte[]> mapClassToBytes(String fileName) {
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display("class-file\t:" + fileName);
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File fileToBeRedefined = new File(fileName);
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int fileToRedefineLength = (int )fileToBeRedefined.length();
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byte[] arrayToRedefine = new byte[fileToRedefineLength];
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FileInputStream inputFile;
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try {
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inputFile = new FileInputStream(fileToBeRedefined);
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} catch (FileNotFoundException e) {
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throw new Failure(UNEXPECTED_STRING + e);
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}
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try {
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inputFile.read(arrayToRedefine);
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inputFile.close();
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} catch (IOException e) {
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throw new Failure(UNEXPECTED_STRING + e);
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}
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HashMap<com.sun.jdi.ReferenceType,byte[]> mapForClass = new HashMap<com.sun.jdi.ReferenceType,byte[]>();
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mapForClass.put(testedClass, arrayToRedefine);
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return mapForClass;
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}
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private Method getCurrentMethod(ThreadReference thread) {
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try {
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Method mthd = thread.frame(0).location().method();
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display("current method\t:" + mthd);
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return mthd;
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} catch (IncompatibleThreadStateException e) {
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throw new Failure(UNEXPECTED_STRING + e);
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}
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}
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private void prepareTestCases() {
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debugeeClass = debugee.classByName(debugeeName);
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display("debugeeClass\t\t:" + debugeeClass.name());
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display("default class loader\t:"
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+ debugeeClass.classLoader().referenceType().name());
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display("setting breakpoint...");
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debugee.setBreakpoint(testedClass,
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redefineclasses035a.brkpMethodName,
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redefineclasses035a.brkpLineNumber);
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}
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}
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