Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: FinalLocalsTest.java Sprache: JAVA

/*
* Copyright (c) 2000, 2015, 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.
*/

/**
* @test
* @bug 4326648 4768329
* @summary Test to verify that table entries are generated for all final
*          locals when a class is built for debug, even if they could be
*          inlined otherwise.
* @author Tim Bell
*
* @run build TestScaffold VMConnection TargetListener TargetAdapter
* @run compile -g FinalLocalsTest.java
* @run driver FinalLocalsTest
*/
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

import java.util.*;

    /********** target program **********/

class FinalLocalsTarg {
    public void test1 (final int t, int k){
        String s1 = "first";
        final int z = 0;
        if (true) {
            final float r = 10.00f;
            boolean b = true;
            System.out.println(r);
        }
    }
    public void hi(){
        return;
    }
    public static void main(String[] args) {
        System.out.print("in FinalLocalsTarg:");
        new FinalLocalsTarg().hi();
        return;
    }
}

    /********** test program **********/

public class FinalLocalsTest extends TestScaffold {
    ReferenceType targetClass;
    ThreadReference mainThread;

    FinalLocalsTest (String args[]) {
        super(args);
    }

    public static void main(String[] args)      throws Exception {
        new FinalLocalsTest(args).startTests();
    }

    /********** test core **********/
    static final int VARIABLES = 1;
    static final int BYNAME = 2;
    static final int ARGUMENTS = 3;
    /*
     * Take a String containing comma separated values
     * and return those values in a TreeSet.
     */
    private TreeSet buildSet(String in) {
        TreeSet result = new TreeSet();
        StringTokenizer tt = new StringTokenizer(in, ",");
        while (tt.hasMoreTokens()) {
            String ss = tt.nextToken();
            if (! result.add(ss)) {
                failure ("Duplicate entry \"" + ss + "\" in string: " +
                         in + " is not allowed");
            }
        }
        return result;
    }

    private void test(Method method, int which, String name, String expected) {
        String got = testCase(method, which);
        System.out.println(" test() comparing expected = " + expected +
                           " to got = " + got);
        TreeSet expectedSet = buildSet(expected);
        TreeSet gotSet = buildSet(got);

        while (! expectedSet.isEmpty()) {
            String ee = (String)expectedSet.first();
            expectedSet.remove(ee);
            if (gotSet.contains(ee)) {
                gotSet.remove(ee);
            } else {
                failure (name + " Expected entry \"" + ee + "\" not found");
            }
        }

        //assert expectedSet.isEmpty() : name + " expected set should have been emptied";

        if (! gotSet.isEmpty()) {
            StringBuffer sb = new StringBuffer();
            Iterator it = gotSet.iterator();
            while (it.hasNext()) {
                sb.append(it.next());
                if (it.hasNext()) {
                    sb.append(",");
                }
            }
            failure (name + " Unexpected entries found: " + sb.toString());
        }
    }

    String testCase(Method method, int which) {
        try {
            List vars;
            switch (which) {
                case VARIABLES:
                    vars = method.variables();
                    break;
                case BYNAME:
                    vars = method.variablesByName("s1");
                    break;
                case ARGUMENTS:
                    vars = method.arguments();
                    break;
                default:
                    throw new InternalException("should not happen");
            }
            StringBuffer sb = new StringBuffer();
            for (Iterator it = vars.iterator(); it.hasNext(); ) {
                LocalVariable lv = (LocalVariable)it.next();
                if (sb.length() > 0) {
                    sb.append(",");
                }
                sb.append(lv.name());
            }
            return sb.toString();
        } catch (Exception exc) {
            String st = exc.getClass().getName();
            int inx = st.lastIndexOf('.');
            return st.substring(inx+1);
        }
    }

    protected void runTests() throws Exception {
        /*
         * Get to the top of main()
         * to determine targetClass and mainThread
         */
        BreakpointEvent bpe = startToMain("FinalLocalsTarg");
        targetClass = bpe.location().declaringType();
        mainThread = bpe.thread();
        EventRequestManager erm = vm().eventRequestManager();

        /*
         * Get to a point where the classes are loaded.
         */
        BreakpointEvent bp = resumeTo("FinalLocalsTarg", "hi", "()V");

        ReferenceType rt = findReferenceType("FinalLocalsTarg");
        if (rt == null) {
            throw new Exception("FinalLocalsTarg: not loaded");
        }

        /*
         * Inspect the LocalVariableTable attributes for method "test1"
         * NOTE: .class files compiled with some versions of javac will
         * give results listed in different order.  That's OK.
         */
        Method method = findMethod(rt, "test1", "(II)V");
        if (method == null) {
            throw new Exception("Method not found");
        }
        test(method, VARIABLES, "VARIABLES",
             "t,k,s1,z,r,b");
        test(method, BYNAME, "BYNAME",
             "s1");
        test(method, ARGUMENTS, "ARGUMENTS",
             "t,k");

        /*
         * All Done.  Resume the target listening for events
         */
        listenUntilVMDisconnect();

        /*
         * deal with results of test
         * if anything has called failure("foo") testFailed will be true
         */
        if (!testFailed) {
            println("FinalLocalsTest: passed");
        } else {
            throw new Exception("FinalLocalsTest: failed");
        }
    }
}

¤ Dauer der Verarbeitung: 0.5 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.