323 lines
12 KiB
Java
323 lines
12 KiB
Java
/*
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* Copyright (c) 2002, 2018, 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 against the method <code>com.sun.jdi.VirtualMachine.redefineClasses()</code>
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* and checks up the following assertion: <br>
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* The redefined methods will be used on new invokes. <br>
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* If resetting these frames is desired, use
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* <code>ThreadReference.popFrames(StackFrame)</code> with
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* <code>Method.isObsolete()</code>. <br>
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*
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* The test consits of the following files: <br>
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* <code>redefineclasses002.java</code> - debugger <br>
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* <code>redefineclasses002a.java</code> - initial debuggee <br>
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* <code>newclass/redefineclasses002a.java</code> - redefined debuggee <br>
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*
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*
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* This test performs the following steps: <br>
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* 1. Setting breakpoint at line of method, which will be redefined.
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* This method has a local variable <code>testedVar</code> and the breakpoint
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* is placed after it's initializing. <br>
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* 2. When breakpoint event is arrived, Debugger requests initial
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* value of <code>testedVar</code> <br>
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* 3. While VM suspended Debugger redefines the tested method.
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* It is added new line, after execution point. That line changes
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* value of <code>testedVar</code>, different from initial-value. <br>
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* 4. While debugee remains suspending, debuger tries to get value of
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* <code>testedVar</code>. In this case <code>AbsentInformationException</code>
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* is expected. <br>
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* 5. Popping the active frame and trying to get value again.
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* It is expected, method will be not found in active stack frames. <br>
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* 6. Setting breakpoint at line after the new one and resuming debugee.<br>
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* 7. Trying to get new value of <code>testedVar</code>. It is expected the last
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* value will be different from initial-value. <br>
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*
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* The test should be compiled with <code>-g</code> option, so cfg-file redefines
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* <code>JAVA_OPTS</code> variable.
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*/
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public class redefineclasses002 {
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public final static String UNEXPECTED_STRING = "***Unexpected exception ";
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public final static String EXPECTED_STRING = "!!!Expected exception ";
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private final static String prefix = "nsk.jdi.VirtualMachine.redefineClasses.";
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private final static String debuggerName = prefix + "redefineclasses002";
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private final static String debugeeName = debuggerName + "a";
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private final static String newClass = "newclass"
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+ File.separator + prefix.replace('.',File.separatorChar)
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+ "redefineclasses002a.class";
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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 testDir;
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private ClassType testedClass;
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class MethodNotFoundException extends RuntimeException {
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MethodNotFoundException (String msg) {
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super(msg);
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}
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}
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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("debugger FAILURE> " + msg + "\n");
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}
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public static void main(String argv[]) {
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System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));
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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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redefineclasses002 thisTest = new redefineclasses002();
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ArgumentHandler argHandler = new ArgumentHandler(argv);
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log = new Log(out, argHandler);
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testDir = argv[0];
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waitTime = argHandler.getWaitTime() * 60000;
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debugee = Debugee.prepareDebugee(argHandler, log, debugeeName);
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try {
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thisTest.execTest();
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} catch (TestBug 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.resume();
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debugee.quit();
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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 TestBug {
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if (!debugee.VM().canRedefineClasses()) {
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debugee.sendSignal("continue");
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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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debugee.VM().suspend();
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testedClass = (ClassType)debugee.classByName(debugeeName);
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display("Tested class\t:" + testedClass.name());
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BreakpointRequest brkp = debugee.setBreakpoint(testedClass,
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redefineclasses002a.brkpMethodName,
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redefineclasses002a.brkpLineNumber);
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debugee.resume();
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debugee.sendSignal("continue");
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BreakpointEvent brkpEvent = waitBreakpointEvent(brkp, waitTime);
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ThreadReference thread = brkpEvent.thread();
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display("\nTEST BEGINS");
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display("===========");
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IntegerValue val = readVariableValue(thread, brkpEvent.location().method(),
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redefineclasses002a.testedVarName);
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if ( val.intValue() != redefineclasses002a.INITIAL_VALUE) {
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complain("***UNEXPECTED value*** " + val);
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exitStatus = Consts.TEST_FAILED;
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}
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display(">redefining the Debugee class...");
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Map<? extends com.sun.jdi.ReferenceType,byte[]> mapBytes = mapClassToBytes(testDir + File.separator + newClass);
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try {
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debugee.VM().redefineClasses(mapBytes);
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} catch (UnsupportedOperationException e) {
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if (!debugee.VM().canRedefineClasses()) {
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complain("*** Warning: " + e);
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complain("*** The test is considered as passed");
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return;
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}
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throw new TestBug(UNEXPECTED_STRING + e);
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} catch (Exception e) {
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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Method method = null;
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try {
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display("thread location>" + thread.frame(0).location());
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method = thread.frame(0).location().method();
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} catch(IncompatibleThreadStateException e) {
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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val = readVariableValue(thread, method, redefineclasses002a.testedVarName);
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display(">frames is being popped...");
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try {
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thread.popFrames(thread.frame(0));
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} catch (IncompatibleThreadStateException e) {
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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try {
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val = readVariableValue(thread, method, redefineclasses002a.testedVarName);
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} catch (MethodNotFoundException e) {
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display(EXPECTED_STRING + e + "\n");
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}
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brkp = debugee.setBreakpoint(testedClass,
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redefineclasses002a.brkpMethodName,
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redefineclasses002a.brkpLineNumber + 2);
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debugee.resume();
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brkpEvent = waitBreakpointEvent(brkp, waitTime);
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ThreadReference thrd = brkpEvent.thread();
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val = readVariableValue(thrd, brkpEvent.location().method(),
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redefineclasses002a.testedVarName);
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if ( val.intValue() != redefineclasses002a.REDEFINED_VALUE) {
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complain("***UNEXPECTED value*** " + val);
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exitStatus = Consts.TEST_FAILED;
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}
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debugee.resume();
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display("=============");
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display("TEST FINISHES\n");
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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 TestBug(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 TestBug(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 IntegerValue readVariableValue(ThreadReference thrd, Method method,
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String varName) {
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String methodName = method.name();
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display(">getting value of local variable...");
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display("method name\t: " + methodName);
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display("variable name\t: " + varName);
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StackFrame stckFrm = null;
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List frames = null;
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try {
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frames = thrd.frames();
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} catch (IncompatibleThreadStateException e) {
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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Iterator iterator = frames.iterator();
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boolean isMethodFound = false;
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boolean isIntegerExpected = true;
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IntegerValue res = null;
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while (iterator.hasNext()) {
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stckFrm = (StackFrame )iterator.next();
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if (stckFrm == null)
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throw new TestBug("Not defined frame");
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if (method.equals(stckFrm.location().method())) {
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isMethodFound = true;
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try {
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LocalVariable var = stckFrm.visibleVariableByName(varName);
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res = (IntegerValue )stckFrm.getValue(var);
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} catch (AbsentInformationException e) {
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if (method.isObsolete()) {
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display(EXPECTED_STRING + e + "\n");
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isIntegerExpected = false;
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}
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else
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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break;
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}
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}
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if (!isMethodFound)
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throw new MethodNotFoundException("Method :" + methodName + " not found");
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if ( !(res instanceof IntegerValue) ) {
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if (isIntegerExpected)
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display("unexpected value\t: <" + res + ">\n");
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} else {
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display(varName + " = " + res + "\n");
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}
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return res;
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}
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private BreakpointEvent waitBreakpointEvent(BreakpointRequest brkp, long waitTime) {
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Event event;
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display(">waiting breakpoint event...");
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try {
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event = debugee.waitingEvent(brkp, waitTime);
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} catch (InterruptedException e) {
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throw new TestBug(UNEXPECTED_STRING + e);
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}
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if (!(event instanceof BreakpointEvent )) {
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throw new TestBug("BreakpointEvent didn't arrive");
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}
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return (BreakpointEvent )event;
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}
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}
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