463 lines
18 KiB
Java
463 lines
18 KiB
Java
/*
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* Copyright (c) 2001, 2020, 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.jdwp.VirtualMachine.RedefineClasses;
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import java.io.*;
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import nsk.share.*;
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import nsk.share.jpda.*;
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import nsk.share.jdwp.*;
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/**
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* Test for JDWP command: VirtualMachine.RedefineClasses.
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*
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* See redefinecls001.README for description of test execution.
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*
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* This class represents debugger part of the test.
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* Test is executed by invoking method runIt().
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* JDWP command is tested in the method testCommand().
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*
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* @see #runIt()
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* @see #testCommand()
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*/
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public class redefinecls001 {
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// exit status constants
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static final int JCK_STATUS_BASE = 95;
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static final int PASSED = 0;
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static final int FAILED = 2;
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// VM capability constatnts
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static final int VM_CAPABILITY_NUMBER = JDWP.Capability.CAN_REDEFINE_CLASSES;
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static final String VM_CAPABILITY_NAME = "canRedefineClasses";
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// package and classes names
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static final String PACKAGE_NAME = "nsk.jdwp.VirtualMachine.RedefineClasses";
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static final String TEST_CLASS_NAME = PACKAGE_NAME + "." + "redefinecls001";
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static final String DEBUGEE_CLASS_NAME = TEST_CLASS_NAME + "a";
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// tested JDWP command
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static final String JDWP_COMMAND_NAME = "VirtualMachine.RedefineClasses";
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static final int JDWP_COMMAND_ID = JDWP.Command.VirtualMachine.RedefineClasses;
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// tested class name and signature
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static final String TESTED_CLASS_NAME = TEST_CLASS_NAME + "b";
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static final String TESTED_CLASS_SIGNATURE = "L" + TESTED_CLASS_NAME.replace('.', '/') + ";";
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// field and method names
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static final String CONSTRUCTOR_FIELD_NAME = "constructorInvoked";
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static final String STATIC_METHOD_FIELD_NAME = "staticMethodInvoked";
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static final String OBJECT_METHOD_FIELD_NAME = "objectMethodInvoked";
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static final String BREAKPOINT_METHOD_NAME = "runIt";
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static final int BREAKPOINT_LINE_BEFORE = redefinecls001a.BREAKPOINT_LINE_BEFORE;
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static final int BREAKPOINT_LINE_AFTER = redefinecls001a.BREAKPOINT_LINE_AFTER;
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// filename for redefined class
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static final String REDEFINED_CLASS_FILE_NAME = "bin" + File.separator + "newclass"
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+ File.separator + PACKAGE_NAME.replace('.',File.separatorChar)
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+ File.separator + "redefinecls001b.class";
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// usual scaffold objects
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ArgumentHandler argumentHandler = null;
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Log log = null;
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Binder binder = null;
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Debugee debugee = null;
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Transport transport = null;
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int waitTime = 0; // minutes
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long timeout = 0; // milliseconds
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String testDir = null;
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boolean dead = false;
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boolean success = true;
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// data obtained from debuggee
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long debugeeClassID = 0;
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long testedClassID = 0;
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long breakpointMethodID = 0;
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ByteBuffer redefinedClassBytes = null;
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// -------------------------------------------------------------------
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/**
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* Start test from command line.
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*/
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public static void main (String argv[]) {
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System.exit(run(argv,System.out) + JCK_STATUS_BASE);
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}
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/**
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* Start JCK-compilant test.
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*/
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public static int run(String argv[], PrintStream out) {
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return new redefinecls001().runIt(argv, out);
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}
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// -------------------------------------------------------------------
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/**
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* Perform test execution.
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*/
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public int runIt(String argv[], PrintStream out) {
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// make log for debugger messages
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argumentHandler = new ArgumentHandler(argv);
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log = new Log(out, argumentHandler);
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waitTime = argumentHandler.getWaitTime(); // minutes
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timeout = waitTime * 60 * 1000; // milliseconds
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// get testDir as first positional parameter
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String args[] = argumentHandler.getArguments();
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if (args.length < 1) {
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log.complain("Test dir required as the first positional argument");
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return FAILED;
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}
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testDir = args[0];
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// execute test and display results
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try {
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log.display("\n>>> Loading redefined class \n");
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// load class file for redefined class
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log.display("Loading bytecode of redefined class from file: " +
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REDEFINED_CLASS_FILE_NAME);
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redefinedClassBytes = loadClassBytes(REDEFINED_CLASS_FILE_NAME, testDir);
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log.display(" ... loaded bytes: " + redefinedClassBytes.length());
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log.display("\n>>> Starting debugee \n");
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// launch debuggee
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binder = new Binder(argumentHandler, log);
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log.display("Launching debugee VM");
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debugee = binder.bindToDebugee(DEBUGEE_CLASS_NAME);
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transport = debugee.getTransport();
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log.display(" ... debuggee launched");
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// set timeout for debuggee responces
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log.display("Setting timeout for debuggee responces: " + waitTime + " minute(s)");
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transport.setReadTimeout(timeout);
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log.display(" ... timeout set");
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// wait for VM_INIT event
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log.display("Waiting for VM_INIT event");
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debugee.waitForVMInit();
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log.display(" ... VM_INIT event received");
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// query debugee for VM-dependent ID sizes
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log.display("Querying for IDSizes");
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debugee.queryForIDSizes();
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log.display(" ... size of VM-dependent types adjusted");
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// check for VM capability
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log.display("\n>>> Checking VM capability \n");
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log.display("Getting new VM capability: " + VM_CAPABILITY_NAME);
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boolean capable = debugee.getNewCapability(VM_CAPABILITY_NUMBER, VM_CAPABILITY_NAME);
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log.display(" ... got VM capability: " + capable);
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// exit as PASSED if this capability is not supported
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if (!capable) {
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out.println("TEST PASSED: unsupported VM capability: "
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+ VM_CAPABILITY_NAME);
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return PASSED;
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}
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// prepare debuggee for testing and obtain required data
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log.display("\n>>> Getting prepared for testing \n");
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prepareForTest();
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// test JDWP command
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log.display("\n>> Testing JDWP command \n");
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testCommand();
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// check command results
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if (success) {
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log.display("\n>>> Checking result of tested command \n");
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checkResult();
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}
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// finish debuggee
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log.display("\n>> Finishing debuggee \n");
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// resume debuggee after testing command
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log.display("Resuming debuggee");
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debugee.resume();
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log.display(" ... debuggee resumed");
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// wait for VM_DEATH event
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log.display("Waiting for VM_DEATH event");
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debugee.waitForVMDeath();
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log.display(" ... VM_DEATH event received");
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dead = true;
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} catch (Failure e) {
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log.complain("TEST FAILED: " + e.getMessage());
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success = false;
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} catch (Exception e) {
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e.printStackTrace(out);
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log.complain("Caught unexpected exception while running the test:\n\t" + e);
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success = false;
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} finally {
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log.display("\n>>> Finishing test \n");
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// disconnect debugee and wait for its exit
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if (debugee != null) {
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quitDebugee();
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}
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}
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// check result
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if (!success) {
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log.complain("TEST FAILED");
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return FAILED;
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}
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out.println("TEST PASSED");
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return PASSED;
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}
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/**
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* Get debuggee prepared for testing and obtain required data.
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*/
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void prepareForTest() {
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// wait for debuggee and tested classes loaded on debuggee startup
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log.display("Waiting for classes loaded:"
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+ "\n\t" + DEBUGEE_CLASS_NAME
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+ "\n\t" + TESTED_CLASS_NAME);
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String classNames[] = {DEBUGEE_CLASS_NAME, TESTED_CLASS_NAME};
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long classIDs[] = debugee.waitForClassesLoaded(classNames,
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JDWP.SuspendPolicy.ALL);
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debugeeClassID = classIDs[0];
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log.display(" ... debuggee class loaded with classID: " + debugeeClassID);
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testedClassID = classIDs[1];
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log.display(" ... tested class loaded with classID: " + testedClassID);
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log.display("");
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// set breakpoint before redefinition and wait for debugee reached it
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log.display("Waiting for breakpoint before redefiniton reached at: "
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+ BREAKPOINT_METHOD_NAME + ":" + BREAKPOINT_LINE_BEFORE);
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long threadID = debugee.waitForBreakpointReached(debugeeClassID,
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BREAKPOINT_METHOD_NAME,
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BREAKPOINT_LINE_BEFORE,
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JDWP.SuspendPolicy.ALL);
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log.display(" ... breakpoint before redefinition reached with threadID: " + threadID);
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log.display("");
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}
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/**
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* Perform testing JDWP command.
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*/
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void testCommand() {
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int length = redefinedClassBytes.length();
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// create command packet and fill requred out data
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log.display("Create command packet:");
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log.display("Command: " + JDWP_COMMAND_NAME);
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CommandPacket command = new CommandPacket(JDWP_COMMAND_ID);
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log.display(" classes: " + 1);
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command.addInt(1);
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log.display(" refTypeID: " + testedClassID);
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command.addReferenceTypeID(testedClassID);
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log.display(" classfile: " + length + " bytes");
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command.addInt(length);
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log.display(" classbytes:\n" + redefinedClassBytes);
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command.addBytes(redefinedClassBytes.getBytes(), 0, length);
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command.setLength();
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// send command packet to debugee
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try {
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log.display("Sending command packet:\n" + command);
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transport.write(command);
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} catch (IOException e) {
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log.complain("Unable to send command packet:\n\t" + e);
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success = false;
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return;
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}
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// receive reply packet from debugee
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ReplyPacket reply = new ReplyPacket();
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try {
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log.display("Waiting for reply packet");
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transport.read(reply);
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log.display(" ... reply packet received:\n" + reply);
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} catch (IOException e) {
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log.complain("Unable to read reply packet for tested command:\n\t" + e);
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success = false;
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return;
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}
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// check reply packet header
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try{
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log.display("Checking header of reply packet");
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reply.checkHeader(command.getPacketID());
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log.display(" ... packet header is correct");
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} catch (BoundException e) {
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log.complain("Wrong header of reply packet for tested command:\n\t"
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+ e.getMessage());
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success = false;
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return;
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}
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// start parsing reply packet data
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log.display("Parsing reply packet data:");
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reply.resetPosition();
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// no reply data to parse
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log.display(" no reply data");
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// check for extra data in reply packet
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if (!reply.isParsed()) {
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log.complain("Extra trailing bytes found in reply packet at: "
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+ reply.offsetString());
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success = false;
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}
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log.display(" ... packed data parsed");
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}
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/**
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* Check result of the tested JDWP command.
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*/
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void checkResult() {
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// set breakpoint after redefinition and wait for debugee reached it
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log.display("Waiting for breakpoint after redefiniton reached at: "
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+ BREAKPOINT_METHOD_NAME + ":" + BREAKPOINT_LINE_AFTER);
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long threadID = debugee.waitForBreakpointReached(debugeeClassID,
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BREAKPOINT_METHOD_NAME,
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BREAKPOINT_LINE_AFTER,
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JDWP.SuspendPolicy.ALL);
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log.display(" ... breakpoint after redefinition reached with threadID: " + threadID);
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log.display("");
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// check invoked methods
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log.display("Getting value of static field: " + CONSTRUCTOR_FIELD_NAME);
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JDWP.Value value = debugee.getStaticFieldValue(testedClassID,
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CONSTRUCTOR_FIELD_NAME, JDWP.Tag.INT);
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int constructorInvoked = ((Integer)value.getValue()).intValue();
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log.display(" ... got constructorInvoked: " + methodKind(constructorInvoked));
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if (constructorInvoked != redefinecls001b.NOT_REDEFINED_METHOD_INVOKED) {
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log.complain("Constructor has been invoked after class redefinition");
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success = false;
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}
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log.display("Getting value of static field: " + STATIC_METHOD_FIELD_NAME);
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value = debugee.getStaticFieldValue(testedClassID,
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STATIC_METHOD_FIELD_NAME, JDWP.Tag.INT);
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int staticMethodInvoked = ((Integer)value.getValue()).intValue();
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log.display(" ... got staticMethodInvoked: " + methodKind(staticMethodInvoked));
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if (staticMethodInvoked != redefinecls001b.REDEFINED_METHOD_INVOKED) {
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log.complain("Not redefined static method is invoked after class redefinition");
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success = false;
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}
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log.display("Getting value of static field: " + OBJECT_METHOD_FIELD_NAME);
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value = debugee.getStaticFieldValue(testedClassID,
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OBJECT_METHOD_FIELD_NAME, JDWP.Tag.INT);
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int objectMethodInvoked = ((Integer)value.getValue()).intValue();
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log.display(" ... got objectMethodInvoked: " + methodKind(objectMethodInvoked));
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if (objectMethodInvoked != redefinecls001b.REDEFINED_METHOD_INVOKED) {
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log.complain("Not redefined object method is invoked after class redefinition");
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success = false;
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}
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}
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/**
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* Load class bytes form the given file.
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*/
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ByteBuffer loadClassBytes(String fileName, String dirName) {
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String fileSep = System.getProperty("file.separator");
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String filePath = dirName + fileSep + fileName;
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String error = "Unable to read bytes from class file:\n\t" + filePath;
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int length = 0;
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byte bytes[] = null;
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try {
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File file = new File(filePath);
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length = (int)file.length();
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FileInputStream is = new FileInputStream(file);
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bytes = new byte[length];
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int number = is.read(bytes);
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if (number < 0) {
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log.complain("EOF reached while reading bytes from file");
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throw new Failure(error);
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} else if (number != length) {
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log.complain("Unexpected number of bytes red from file: " + number
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+ " (expected: " + length + ")");
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throw new Failure(error);
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}
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is.close();
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} catch ( IOException e ) {
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log.complain("Caught IOException while reading bytes from file:\n\t" + e);
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throw new Failure(error);
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}
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ByteBuffer byteBuffer = new ByteBuffer(length, 0);
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byteBuffer.addBytes(bytes, 0, length);
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return byteBuffer;
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}
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/**
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* Disconnect debuggee and wait for it exited.
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*/
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void quitDebugee() {
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if (debugee == null)
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return;
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// disconnect debugee
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if (!dead) {
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try {
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log.display("Disconnecting debuggee");
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debugee.dispose();
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log.display(" ... debuggee disconnected");
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} catch (Failure e) {
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log.display("Failed to finally disconnect debuggee:\n\t"
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+ e.getMessage());
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}
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}
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// wait for debugee exited
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log.display("Waiting for debuggee exit");
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int code = debugee.waitFor();
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log.display(" ... debuggee exited with exit code: " + code);
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// analize debugee exit status code
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if (code != JCK_STATUS_BASE + PASSED) {
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log.complain("Debuggee FAILED with exit code: " + code);
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success = false;
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}
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}
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// return string representation of kind of invoked method
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private static String methodKind(int kind) {
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switch (kind) {
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case redefinecls001b.METHOD_NOT_INVOKED:
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return "METHOD_NOT_INVOKED";
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case redefinecls001b.REDEFINED_METHOD_INVOKED:
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return "REDEFINED_METHOD_INVOKED";
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case redefinecls001b.NOT_REDEFINED_METHOD_INVOKED:
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return "NOT_REDEFINED_METHOD_INVOKED";
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default:
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return "UNKNOWN_METHOD_KIND";
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}
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}
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}
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